How does the number of sunspots influence climate? How do we know that sunspots do not cause the observed warming since 1975?
Answers
The number of sunspots has been found to have an influence on climate through variations in solar radiation. Sunspots are dark areas on the Sun's surface that are associated with intense magnetic activity. When sunspot activity is high, the Sun emits more energy in the form of ultraviolet (UV) and visible light, which can impact Earth's climate.
However, scientific studies have shown that the observed warming since 1975 cannot be solely attributed to sunspots. One key piece of evidence is the correlation between increased greenhouse gas concentrations and the observed warming trend. The rise in atmospheric CO2 and other greenhouse gases due to human activities has been well-documented and is known to trap heat in the Earth's atmosphere, leading to global warming.
Furthermore, climate models that incorporate both natural and human-induced factors can reproduce the observed temperature changes much more accurately than models considering natural factors alone. These models show that the influence of sunspots on climate is relatively small compared to the overall impact of greenhouse gas emissions.
Additionally, direct measurements of solar output, including total solar irradiance and UV radiation, have not shown a significant increase since the 1970s, despite the observed warming trend during the same period.
In summary, while the number of sunspots can have some influence on climate through variations in solar radiation, the observed warming since 1975 cannot be attributed primarily to sunspots. The overwhelming scientific consensus attributes the recent global warming to the increased concentration of greenhouse gases in the atmosphere, primarily caused by human activities.
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Related Questions
Compare and contrast refugees and asylees to the United States. Why do geographers use different terms to discuss
these groups? How are these groups different from one another?
Answers
Answer:
Both refugees and asylees are seeking protective status in the US. However, refugees are located outside the US at the time of request, while asylees are located in the United States at the time of request. Asylees have already migrated to the US. Refugees and asylees may also be fleeing different crises.
Explanation:
In a large city, a scientist noticed that there were very few trees, plants, or shrubs. She also noticed that there was a high amount of respiratory problems in the city. After meeting with multiple city planners and council members, the scientist asked for a grant to plant trees, plants, and shrubs around the city.
Answers
Answer:
The lack of trees and shrubs leads to desertification and air pollution.
Explanation:
The shrubs, trees and other plants produce oxygen and that is essential for life on earth, without clear and clean atmosphere there will be respiratory problems and other diseases. In order to reduce and eliminate the effects of diseases the city needs to develop green belts and shelter belts that stop the dust and purifies the air around the city.which of the following regions has had the lowest freshwater supply per person in recent years?; which of the following issues is the most pressing environmental concern in the middle east?; which of the following goals is included in the initiatives created by the united nations; too many fish being caught in a single season can lead to __________.; globally sea levels have risen by inches over the past 100 years; anoxia, or a lack of oxygen in bodies of water, leads to __________.; africa experiences a high level of air pollution; which of the following statements best characterizes the risk of ground-level ozone air pollution
Answers
In recent years, Asia has had the lowest fresh water supply per inhabitant. Nearly half of the world's freshwater is found in Asia. Asia still has the lowest freshwater availability per person despite having a large amount of available freshwater.
Water availability varies around the world since many areas don't get enough rain, which causes such areas to lack water. The water supply in the area is likewise impacted by the population. Water stress in some areas is becoming more acute as a result of climate change's increased frequency and severity of flooding and droughts.
The world's most water-scarce region is the Middle East and North Africa (MENA). Only 1.4 percent of the world's renewable freshwater resources are found in the region, which is home to 6.3% of the world's population.
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Please Help Me!!!!!!
Answers
Please give me a thanks I would really appreciate it
Nature _______ after a volcano explodes and cools
Answers
Answer:
has a way of regenerating itself
Explanation:
Where the Andes mountains are the widest-
A. Atacama
B. Altiplano
C. Orinoco
D. Madre
(right answer only!)
Answers
Answer:
B. Altiplano
Explanation:
Just took the quiz and got it right
In a mountain range, one would expect to find: A) that the daily temperature variation increases with altitude B) that the mean daily temperature decreases with altitude C) that the mean daily temperature increases with altitude D) both A ) and B) above Maximum daily air temperature usually occurs at approximately ... A) noon. B) 1 p.m. C) 3 p.m. D) 6 p.m.
Answers
In a mountain range, one would expect to find that the mean daily temperature decreases with altitude, and the daily temperature variation increases with altitude. Option D) both A) and B) above are correct.
Maximum daily air temperature usually occurs at approximately noon. Temperature and altitude are two main physical variables that change according to the height of the mountain. Temperature decreases with altitude because of the reduction in air pressure.
In the troposphere, the air temperature drops at a rate of approximately 6.4 degrees Celsius per kilometer, making it cooler at higher altitudes compared to the low altitudes where the temperature is higher. The temperature variation (the difference between the maximum and minimum temperature) increases with altitude.
In the mountains, temperatures are highly variable and change quickly in response to the changing atmosphere. In addition to this, the amount of direct sunlight received at higher altitudes is more, and the air is thinner. This makes the temperature fluctuation more significant.
Maximum daily air temperature usually occurs at approximately noon, when the sun's rays are almost perpendicular to the earth's surface. The temperature increases slowly from the start of the day, peaks in the afternoon, and then declines until it reaches its lowest point at night. Here option D is the correct answer.
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Roughly half or 50% of all groundwater is found a depths less than Enter the closest numerical value in the first blank and the correct unit (metric system) in the second space, Zero credit for feet etc. Your answer first answers should be whole numbers and no ranges.
Answers
Roughly half or 50% of all groundwater is found at depths less than 250 meters.
Groundwater is water that is stored beneath the Earth's surface in porous rock formations called aquifers. The depth at which groundwater is found varies depending on factors such as geology and climate. However, studies suggest that approximately 50% of all groundwater is located at depths less than 250 meters (or 250 m).
This means that within the top 250 meters of the Earth's crust, a significant amount of accessible groundwater can be found. Understanding the distribution of groundwater depths is crucial for sustainable water management and the development of effective strategies for groundwater extraction and conservation.
This question should be provided as:
Roughly half or 50% of all groundwater is found a depths less than_______? Enter the closest numerical value in the first blank and the correct unit (metric system) in the second space, Zero credit for feet etc. Your answer first answers should be whole numbers and no ranges.Learn more about groundwater: https://brainly.com/question/10557415
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27.
This is a map of some Roman Cities around 2nd Century AD.
What is the BEST reason for why Roman cities were located on the coast?
Answers
Based on the human geography perspective, the best reason why Roman cities were located on the coast is that the nearness to the sea helps promote trade and travel.
What are Roman cities?Roman Cities are major areas or regions in present-day Italy which are famous for their historical and present socioeconomic and political development.
Famous Roman cities include the likes of Milan, Rome, Sicily, and Napoli, among others.
Establishing the roman cities on the coast gives the cities the islands around the Italian Peninsula which provided good ports for trade and good strategic positions for military defense.
Also, aside from trading and military advantage, cities near the coast are known to allow the Romans to travel to foreign lands around the sea like North Africa, conquer new territories, and develop trade routes.
Hence, in this case, it is concluded that the correct answer is that the nearness to the sea helps promote trade and travel. I
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Mining is particularly important to the economies of many of the low islands of Oceania, as these islands tend to have the most natural resources. Please select the best answer from the choices provided T F
Answers
Answer:
False
Explanation:
Right on edge
ozone depletion allows to reach the earth’s surface. greenhouse gases acid precipitation short-wavelength ultraviolet light infrared light long-wavelength ultraviolet light
Answers
Ozone depletion allows short-wavelength ultraviolet light to reach the Earth's surface.
When certain gases, known as greenhouse gases, are released into the atmosphere, they trap heat and contribute to the greenhouse effect. This causes an increase in temperature on Earth. Acid precipitation refers to rain or other forms of precipitation that have a high level of acidity, which is caused by the emission of certain pollutants into the atmosphere. Short-wavelength ultraviolet light is a type of electromagnetic radiation that has a higher energy and is harmful to living organisms. In contrast, infrared light and long-wavelength ultraviolet light have lower energy and are not as harmful.
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Which of the following is NOT one of the four major seasons?
Winter
Harvest
Fall
Summer
Answers
x = A 21.6 B 12.9 C 9.1
Answers
Hi there! Use the equation below.
\( \large{sin57 \degree = \frac{10.8}{x} }\)
The reason why we use this equation because we know that sinA = opposite/hypotenuse. Here we focus on 57°. Our opposite would be 10.8 and hypotenuse is x. Hence sin57° = 10.8/x
You might need a calculator or a trigonometric table to find the value of sin57°. Note that not all values are exact. They are approximate.
Therefore, sin57° ≈ 0.838.
Rewrite the equation.
\( \large{0.838 = \frac{10.8}{x} }\)
Solve the equation for x-term.
\( \large{0.838(x) = \frac{10.8}{x} (x)} \\ \large{0.838x = 10.8} \\ \large{x = \frac{10.8}{0.838} } \\ \large{x = 12.88}\)
Then round up to the nearest tenth. Hence, the value of x is 12.9
Answer
x ≈ 12.9State a true conclusion. 1) If a triangle has a right angle, then the triangle is a right triangle. 2) Triangle ABC is not a right triangle.
Answers
True conclusion is Triangle ABC is not a right triangle, the fact that triangle ABC is not a right triangle does not lead to the true conclusion that the triangle does not have a right angle..
The conclusion that can be stated is: "Triangle ABC is not a right triangle." This conclusion is based on the given information that the triangle ABC is not a right triangle. In geometry, a right triangle is defined as a triangle that has one angle measuring 90 degrees.The given statement in option 1 states a general rule or theorem about right triangles. It states that if a triangle has a right angle, then it is a right triangle. However, the given conclusion in option 2 does not contradict this rule. It simply states that the specific triangle ABC is not a right triangle, without making any claim about whether it has a right angle or not.It is important to note that the conclusion in option 2 is specific to the triangle ABC and does not contradict the general rule stated in option 1. In other words, there may be other triangles that have a right angle and are classified as right triangles, but the specific triangle ABC does not fall into this category.The complete question should be Does the fact that triangle ABC is not a right triangle lead to the true conclusion that the triangle does not have a right angle?
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I WILL AWARD 20 POINTS AND BRAINLIEST FOR THE RIGHT ANSWER PLEASE HELP FAST DUE TODAY!
Look at the four layers of rocks shown below.
Based on observations, it can be inferred that (2 points)
Group of answer choices
A. Layer D is the oldest and Layer A is the youngest
B. Layer C is the oldest and Layer D is the youngest
C. Layer D is the oldest and Layer C is the youngest
D. Layer A is the oldest and Layer D is the youngest
Answers
what physical feature of Vietnam was most useful to guerilla fighters’ tactics during the vietnam war
Answers
Answer:
Củ Chi tunnels and b0oby traps
Explanation:
Which of the following countries belong to Eastern Europe, as it's been defined in this course? (choose all that apply)
Poland
Luxembourg
Austria
Czech Republic
Romania
Iceland
Answers
Answer:
Poland, Czech Republic, and Romania
Here are some extra answers
Estonia, Latvia, Lithuania, Czech Republic, Slovakia, Poland, Hungary, Bulgaria, Moldova, Albania, Romania, Serbia, Montenegro, Bosnia and Herzegovina, Croatia, Slovenia, Macedonia, and Kosovo.
9. The lack of natural harbors also hinders the development of industry and
commerce in some African nations
True
False
Answers
Answer:
Its la k of natire
Explanation:
the hypothesis testing of the atmosphere
Answers
A hypothesis that the increasing application of both surface and ground water for irrigation of crops is a significant source of anthropogenic global warming is tested. In climate models, water is already assigned a major secondary amplifying role in warming, solely as a positive feedback from an atmosphere previously warmed by other GHGs. However, this conclusion ignores the direct anthropogenic forcing from increasing use of water in dry regions to grow crops for the human population. The area irrigated worldwide increased by around 1.5% annually between 1960 and 2000, almost trebling in magnitude. Importantly, though only a small proportion of the Earth’s surface, this additional water vapour is dynamically focussed on dry land, intensifying its potential to elevate the troposphere and reduce the regional OLR. Our modelling analysis suggests that the increase in atmospheric water vapour from irrigation could be significantly more than 1% by 2050 compared to 1950, imposing a global forcing exceeding 1.0 W/m2. Fortunately, this hypothesis can be tested, for example, using the satellite data on OLR acquired since the 1970s, relating this to local trends of increasing irrigation or major floods in arid regions. If found consistent with the data, current proposals to mitigate climate change by limiting combustion of fossil fuels may prove less effective. This prediction regarding the warming effect of increasing irrigation is tested using NCAR reanalysis data made possible by the natural experiments of the periodic flooding of Lake Eyre in Australia's semi-arid interior. It is recommended that this hypothesis be tested using data from local studies in irrigated regions such as changes in outgoing longwave radiation and in increased absorption of incoming shortwave radiation in air.
Describe ways that people adapt in order to cope with different climates
Answers
Answer:
People have adapted to different climates in a variety of ways, both physical and cultural.
Physical adaptations include changes in body size and shape, as well as changes in metabolism and sweating. For example, people who live in cold climates tend to have larger bodies and higher metabolisms, which helps them to generate heat. People who live in hot climates, on the other hand, tend to have smaller bodies and sweat more, which helps them to cool down.
Cultural adaptations include changes in clothing, housing, and food. For example, people who live in cold climates often wear thick clothing and build insulated houses. People who live in hot climates often wear loose-fitting clothing and build houses with plenty of ventilation. People in all climates have also developed different ways of cooking and preparing food that are suited to the climate.
Answer:
Explanation:
People adapt to cope with different climates in various ways. Here are some common adaptive strategies employed by individuals and communities:
1. Clothing: Clothing choices and styles are often adapted to suit different climates. In colder regions, people wear layers of warm clothing, including coats, hats, gloves, and boots, to protect themselves from low temperatures. In hot and humid climates, lightweight and breathable clothing, such as loose-fitting garments made from natural fibers like cotton, is commonly worn to allow airflow and prevent overheating.
2. Shelter: The design and construction of dwellings are adapted to provide comfort and protection from the climate. In colder regions, houses may have insulation, central heating systems, and features like fireplaces to keep occupants warm. In hot climates, buildings are often designed with features like shade structures, proper ventilation, and materials with thermal insulation properties to keep the interiors cooler.
3. Food and Water: Dietary practices adapt to suit different climates. In colder regions, diets may include more warm and hearty foods to provide energy and combat the cold. In hot climates, diets often incorporate lighter and refreshing foods, with an emphasis on hydration. Access to clean and safe water sources is crucial in all climates, and adaptations like water storage systems or digging wells may be necessary in arid regions.
4. Agricultural Practices: Agriculture adapts to suit different climates and maximize crop yields. In colder climates, techniques like crop rotation, greenhouse farming, or using cold-tolerant crops are employed. In hot and arid regions, irrigation systems, drought-resistant crops, and water-conserving techniques like drip irrigation or mulching are commonly used.
5. Technology and Infrastructure: People employ various technological solutions to cope with different climates. Examples include air conditioning and heating systems in buildings, snow removal equipment in cold regions, water management systems like dams and canals in arid areas, and hurricane-resistant infrastructure in coastal regions prone to tropical storms.
6. Behavioral and Cultural Adaptations: People develop behavioral and cultural adaptations to cope with climate challenges. This includes adjusting daily routines, such as taking siestas or avoiding outdoor activities during the hottest parts of the day in hot climates. Traditional practices and knowledge passed down through generations often include coping strategies for specific climates, such as using specific herbs or remedies to alleviate symptoms of heat or cold.
These are just a few examples of the numerous ways in which people adapt to cope with different climates. Adaptations can vary depending on the specific climate conditions, cultural practices, available resources, and technological advancements in a particular region.
what natural barrier would a pioneer traveling west to california encounter that a pioneer traveling to oregon would not?
Answers
Answer:River
Explanation:River
How do tidal power plants generate electricity?
A barrage stops water from flowing out at low tide, creating a force that turns the plant's turbines.
A barrage holds back water during high tide. The force of the water against the barrage turns the plant's turbines.
A barrage allows water to flow during high and low tide, this turn's the plant's turbines.
A barrage stores water during high and low tide. When the water is released, it turns the plant's turbines.
Answers
Tidal power plants generate electricity by: B. A barrage holds back water during high tide. The force of the water against the barrage turns the plant's turbines.
How do tidal power plants generate electricity?Tidal power plants generate electricity by using the force of the tides to turn turbines, which then generate electricity. The most common method for doing this involves constructing a barrage or dam across a bay or estuary with a high tidal range.
The barrage holds back water during high tide, and when the tide goes out, the water is allowed to flow back out through turbines, generating electricity. The force of the water against the barrage turns the plant's turbines, which then produce electricity. This process can be repeated several times a day as the tide goes in and out.
Therefore the correct option is B.
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What do the terms donor democracy and donor fatigue mean, and
what do they reveal about Africa's political geography?
Answers
Donor democracy and donor fatigue are related to Africa's political geography. Donor democracy refers to foreign aid given to promote democratic values in recipient countries.
It is done to encourage democratic practices and institutions in these countries. Donor fatigue refers to a decrease in willingness to provide aid due to the perception that aid is not making a significant impact. Africa's political geography is a source of discussion because of the role that foreign aid plays in shaping political practices and institutions in the continent.
Donor democracy is used to describe the role that foreign aid plays in shaping democratic practices and institutions in African countries. It reveals that there is a reliance on foreign aid to promote democracy in African countries. It also shows that democracy in Africa is not an organic process, but one that is imposed from the outside.
Donor fatigue, on the other hand, reveals that there is a decrease in the willingness to provide aid to African countries. This decrease can be due to a lack of success in promoting democracy in the continent or other reasons such as economic downturns in donor countries. Thus, donor democracy and donor fatigue highlight the complex relationship between foreign aid, democracy, and politics in Africa.
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Feldspars typically produce what weathering products?
Iron oxide minerals plus iron in solution and sulphuric acid
Clay minerals plus potassium, sodium, and calcium in
Chlorite plus iron and magnesium in solution
Quartz as sand grains
Calcium and carbonate in solution
Answers
Feldspars typically produce clay minerals plus potassium, sodium, and calcium in solution as weathering products. So, Second option is correct.
A class of minerals known as feldspars is frequently discovered in igneous, metamorphic, and sedimentary rocks, among other types of rocks. Depending on the unique characteristics of the weathering environment, feldspars can decompose into a number of compounds when they are exposed to weathering.
The fine-grained clay minerals, one of the most frequent weathering products of feldspars, are typically created by the chemical alteration of other minerals. In addition to clay minerals, feldspars can weather and release calcium, potassium, and sodium into solution.
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Which force is most responsible for raindrops falling to Earth friction
wind
gravity
thrust
Answers
Answer:
gravity
Explanation:
gravity pulls everything down to earth or if u fall
Islands at equilibrium that are farther from the mainland contain fewer species than nearer islands at equilibrium because farther islands have?
Answers
Islands at equilibrium that are farther from the mainland contain fewer species than nearer islands at equilibrium because farther islands have less colonization.
here An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water.There are two main types of islands in the sea: continental and oceanic. There are also artificial islands, which are man-madeThere is no standard of size that distinguishes islands from continents or from islets.
There is a widely accepted difference between islands and continents in terms of geology. Continents are often considered to be the largest landmass of a particular continental plate; this holds true for Australia, which sits on its own continental lithosphere and tectonic plate
By contrast, islands are usually seen as being extensions of the oceanic crust (e.g. volcanic islands), or as belonging to a continental plate containing a larger landmass (continental islands).
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the chief difference between fog and a cloud is
Answers
The chief difference between fog and a cloud is their location and formation. Both fog and clouds are formed by the condensation of water vapor in the air, but fog occurs near the ground while clouds are typically found in the atmosphere.
Fog is formed when the air near the surface of the earth cools, causing water vapor to condense into tiny water droplets. This process is often aided by the presence of moisture and temperature inversions, where cool air is trapped beneath warmer air.
Clouds, on the other hand, are formed at higher altitudes in the atmosphere, typically above the boundary layer of air that forms fog. Clouds are created when moist air rises, cools, and condenses into tiny water droplets or ice crystals.
While fog and clouds share a similar formation process, they have different impacts on visibility and weather conditions. Fog can reduce visibility on the ground, while clouds can indicate upcoming weather changes and produce precipitation. Additionally, clouds can have different shapes and forms depending on their altitude, wind patterns, and moisture levels, while fog typically has a uniform appearance.
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In order of longest to shortest, what are the four basic units that make up the geologic time scale?.
Answers
It might look like the geologic time scale is to geoscientists what the periodic table of elements is to chemists. The geologic time scale is divided into (from longest to shortest): eons, eras, periods, epochs, and ages.
Earth's history is characterized by four eons; in order from oldest to youthful, these are the Hadeon, Archean, Proterozoic, and phanerozoic. Eons are the largest intervals of geologic time and are hundreds of millions of times in duration. In the time scale above you can see the Phanerozoic Eon is the most recent on and began further than 500 million times agone
. Eons are divided into lower time intervals known as years.The great Precambrian breadth of time is divided into the Proterozoic, Archean, and Hadean eons in order of adding age. The names of the ages in the Phanerozoic eon( the eon of visible life) are the Cenozoic(" recent life"), Mesozoic(" middle life"), and Paleozoic(" ancient life").
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When culture spreads because one country has defeated another in war, this is called cultural diffusion through __________.
Answers
Answer:
A, Conquest
Since the country defeated the other its conquest.
How is OPEC beneficial to its member countries?