homo erectus skull morphology includes group of answer choices thick bones and pink browridges. thin bones and small browridges. thick bones and small browridges. thick bones and large browridges.
Answers
Large browridges, a long, low, and wide base, as well as thick bones, are all characteristics of the Homo erectus cranium.
What exactly is skull morphology?The auditory bulla of otic capsule, which is variously fused, imbedded, or connected to the skulls of vertebrates, houses the inner and middle ear systems. We can learn a lot about an animal's environmental adaptations from its morphology, or the variances for how these attachments have evolved.
Does nutrition alter skull shape?According to the investigation, which was reported in the Proceedings of the National Academy od Sciences, those that ingested dairy and cereals had slight alterations in their skull shape. One of the main chewing muscles, the temporalis, altered position and shrank as humans migrated toward agriculture.
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Related Questions
How malaria is transmitted
Answers
Malaria is transmitted when an infected female Anopheles mosquito. These are the only mosquitos that can spread malaria. It can also get transmitted when the mosquito drinks from an infected person, and thus they pass it on to their next victim.
Which of the following is not a part of the cell theory?
Cells come from existing cells
cells are non-living units that make up organisms
Ocells are the basic units of structure and function in organisms
all living things are made of cells
Answers
Answer: cells are non-living units that make up organism
Which scenario correctly describes an interaction between the geosphere, hydrosphere, and atmosphere? A. a volcanic eruption produces carbon dioxide gas which is absorbed by an ocean.
B. Plants are eaten by primary consumers and converted to cellular energy through the process of cellular respiration.
C.Plants use water, carbon dioxide, and the energy from the sun to carry out the process of photosynthesis.
D.Ash from a volcanic eruption eventually settles into a layer in the Arctic where it is covered by new snowfall and is incorporated into a glacier.
Answers
Answer:
C. Plants use water, carbon dioxide, and the energy from the sun to carry out the process of photosynthesis.
Explanation:
In this scenario, the geosphere is represented by the plants, which are rooted in the Earth's surface. The hydrosphere is represented by the water that the plants use, and the atmosphere is represented by the carbon dioxide that the plants take in through photosynthesis. This interaction involves the exchange of matter and energy between the three spheres, with the plants using water, carbon dioxide, and sunlight to produce energy and oxygen.
which is true of a step down transformer but not a step up transformer
Answers
Answer:
Which is true of a step-down transformer but not a step-up transformer? The core is made of copper and the coils are made of iron. The primary winding has fewer coils than the secondary winding. The primary winding has more coils than the secondary winding.
Explanation:
Answer:
The primary winding has more coils than the secondary winding.
Explanation:
edge 2022
Mitotic chromosomes were first visualized with the use of very simple tools: a basic light microscope and some dyes. Which of the following characteristics of mitotic chromosomes reflects how they were named? O motion O color O shape O location
Answers
Mitotic chromosomes were first visualized with the use of very simple tools: a basic light microscope and some dyes. The characteristic of mitotic chromosomes that reflects how they were named is their shape. The correct option is c.
Mitotic chromosomes refer to the chromosomes found in eukaryotic cells. They appear during cell division and are responsible for carrying genetic information from one generation of cells to the next. Mitotic chromosomes are usually found in pairs and are made up of DNA, proteins, and other macromolecules. These chromosomes play an important role in cell division, where they ensure that the genetic material is accurately divided into two daughter cells.Mitotic chromosomes are named based on their shape. They are generally long and thin, and they have a rod-like structure that is visible under a light microscope. Mitotic chromosomes are tightly coiled and condensed during cell division, which makes them easier to visualize under a microscope. The coiling and condensation also ensure that the chromosomes are equally distributed between the two daughter cells during cell division. Therefore, the characteristic of mitotic chromosomes that reflects how they were named is their shape, option c.Learn more about cell division: https://brainly.com/question/29537686
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Can anyone think of a type of scientist that deals with things like population studies on animals, and explores things to help end stuff like pollution and plastic problems in the oceans?
YOU'RE AMAZING IF SO! <3
Answers
What are the 5 mechanisms of evolution and their definition?
Answers
Evolution is the process of the gradual transformation of species through changes over time. The five mechanisms of evolution are genetic drift, gene flow, natural selection, mutation, and non-random mating. Below is a brief description of each mechanism.
1. Genetic Drift: It is a mechanism of evolution that occurs due to the random fluctuations of the allelic frequencies in a population. In a small population, genetic drift is significant, and it causes allele frequencies to fluctuate from generation to generation.
2. Gene Flow: It is the movement of genes from one population to another. Gene flow can occur when individuals migrate from one population to another, and the exchange of genes between these populations can cause evolutionary changes.
3. Natural Selection: It is the process that leads to the survival and reproduction of organisms that are better adapted to their environment. In natural selection, the individuals with advantageous traits have a better chance of survival and reproduction, which leads to changes in the population over time.
4. Mutation: It is the process of the introduction of new genetic variants in a population. Mutations are random events that can lead to the formation of new alleles and can cause evolutionary changes in populations over time.
5. Non-Random Mating: It is a situation where individuals with certain traits tend to mate with each other more frequently than with others. Non-random mating can lead to changes in the frequency of alleles in a population and can lead to evolutionary changes.
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Cellular respiration is balanced by photosynthesis; the two processes work together to maintain the cycling of carbon and oxygen among earth systems. What describes the roles of carbon dioxide and water in these two processes?.
Answers
The statement that best describes the roles of carbon dioxide and water in these two processes is as follows:
Carbon dioxide and water are the reactants of photosynthesis and the products of cellular respiration.
Green plants and certain other species employ the process of photosynthesis to create food from carbon dioxide and water with the help of sunlight. In most cases, the green pigment chlorophyll is used in photosynthesis in plants, which produces oxygen as a byproduct.
Plants absorb water and carbon dioxide from the air and soil during photosynthesis. Water is oxidized, which means it loses electrons, while carbon dioxide is reduced, which means it receives electrons, inside the plant cell. Water is converted into oxygen and carbon dioxide into glucose as a result.
A biological process known as cellular respiration is one in which, in the presence of oxygen, a kind of sugar known as glucose is converted into energy in the form of ATP. This effort is necessary to complete metabolic activities.
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Define aerobic respiration in detail.
Answers
Answer:
Aerobic respiration is the process in which oxygen is used to create energy from carbohydrates. This process is enzyme-controlled, and the energy stored is released during photosynthesis. This process has 4 stages; glycolysis, link reaction, the Krebs cycle, and last but not least, oxidative phosphorylation.
Termites have the unusual ability to eat wood.
Why are termites able to eat wood?
Responses
A. Microorganisms prepare the wood before termites eat it.
B. Microorganisms break down wood in the gut of a termite.
C. Termites are close relatives of trees and other plants.
D. Termites have strong mouthparts that can bite and chew wood.
Question 2.
Which statement best describes a healthy ecosystem?
Responses
A. Microorganisms are either absent or present in very small numbers.
B. New kinds of plants and animals arrive every year.
C. Plants and animals of many kinds are able to meet their needs.
D. One kind of animal grows in number every year.
The feathers of a parrot keep it dry and comfortable in the rainforest. However, the feathers do not protect a parrot from cold temperatures.
Could a parrot survive in a very cold environment, such as winter in a temperate forest?
Responses
A. No. The parrot could not live in the trees of a temperate forest.
B. Yes. The parrot would develop new adaptations to keep its body warm.
C. Yes. The parrot would grow thicker feathers.
D. No. The parrot could not meet its need for staying warm.
Question 3 Which statement best describes a healthy ecosystem?
Responses
A. Microorganisms are either absent or present in very small numbers.
B. New kinds of plants and animals arrive every year.
C. Plants and animals of many kinds are able to meet their needs.
D. One kind of animal grows in number every year.
Answers
Termites are able to eat wood because : B. Microorganisms break down wood in the gut of a termite. A healthy ecosystem: C. Plants and animals of many kinds are able to meet their needs. Parrot survive winter in a temperate forest C. Yes. The parrot would grow thicker feathers.
Why are termites able to eat wood?Termites have protozoa and bacteria in their gut that allow them to break down the cellulose fibers in wood, which is difficult for other creatures to digest.
Parrots can survive in very cold environment, such as winter in a temperate forest.
Healthy ecosystem: provides abundant and beneficial services to its constituents, such as food, water, shelter, recreation, and natural beauty.
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What is the answer to this?
Answers
Explanation:
carbohydrates
hope it helps
There is great geographic diversity on our planet. We can use this diversity to make our lives better by using which economic concept?
A. Comparative Advantage
B. Absolute Advantage
C. Recycling
Answers
Answer:
A. Comparative Advantage
how do shoebills respond to changes in external temperature when it's too cold
Answers
The adaptation of shoebills responds to changes in external temperature when it's too cold in their environment.
What changes occur to Shoebills in cold?Shoebills have adapted long toes with no webbing which helps them to balance on the swampy vegetation while stalking prey. There are few predators of shoebill storks. Young and eggs may be taken by nest predators but shoebill storks can defend their young and build nests in areas unreachable to many predators. Shoebills eat big fish such as lungfish and catfish This bird eats crocodiles and they hunt like bosses of the swamp. The Shoebill will stand there motionless like a statue. Some birds fluff up their feathers and open up their wings to catch a breeze that helping them cool.
So we can conclude that If the temperature is very cold then the Shoebill can't go outside.
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One mechanism by which the cell can stably alter gene transcription is through DNA _________, which will repress expression of the gene that is altered. This is an example of an epigenetic modification. Phosphorylation Lipidation Carboxylation Methylation Acetylation
Answers
One mechanism by which the cell can stably alter gene transcription is through DNA methylation, which will repress expression of the gene that is altered. This is an example of an epigenetic modification.
Methylation is a post-transcriptional modification in which a methyl group is added to the cytosine of a CpG dinucleotide within the DNA molecule. Methylated CpG dinucleotides are distributed throughout the mammalian genome and are often clustered into regions known as CpG islands, which are found in 60% of mammalian gene promoters
[1].The relationship between CpG island hypermethylation and the transcriptional repression of associated genes has been the focus of much study, with hypermethylation usually resulting in the silencing of gene expression
[2]. DNA methylation is the most common epigenetic mark in mammals, and its function in gene regulation is well-established in many physiological and pathological processes, including development, X chromosome inactivation, genomic imprinting, and cancer
[3].DNA methylation can have various effects on gene transcription, including silencing the expression of genes that are important for normal development. Furthermore, DNA methylation plays an essential role in X-chromosome inactivation, which is a process that occurs in female mammals, in which one of the two X chromosomes is randomly inactivated to achieve gene dosage compensation
[4]. DNA methylation can be passed on from one cell generation to the next, resulting in the permanent silencing of genes in some cases. Thus, it is an epigenetic modification that has a lasting impact on gene expression.
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Which statements describe processes involved in the accretion of planetesimals and protoplanets? Check all that
apply.
Both involve the melting of solid materials in the nebula.
Both involve the formation of solid particles from nebular materials.
Both involve the work of the gravitational push on nebular materials.
Both involve the trapping of gases and the clumping of masses of matter.
Both involve the growing of gas grains with the addition of atoms and molecules.
Answers
The statements which describe the processes involved in the accretion of planetesimals and protoplanets are:
II. Both involve the formation of solid particles from nebular materials.
IV. Both involve the trapping of gases and the clumping of masses of matter.
Accretion can be defined as the accumulation of coastal sediment, sand or land mass on a tectonic plate at a subduction zone over time.
Planetesimals refers to the small celestial bodies of a combination of dust, rock and gas which combines to form the planets, after the solar system begin to form.
Protoplanets can be defined as a large collection of matter within a giant cloud of gas and dust in orbit around the sun and developing into a planet. Thus, a protoplanet is a large planetary embryo in its early stages of evolution through accretion.
Basically, the processes involved in the accretion of planetesimals and protoplanets are;
The formation of solid particles from nebular materials.The trapping of dusts, gases and the clumping of masses of matter such as rocks.Read more: https://brainly.com/question/10337469
What are 1A, 3B, and 7A examples of on the periodic table?groups.
numbers
periods
rows
Answers
1A, 3B, and 7A are the examples of periods of the periodic table. Periods are the horizontal rows of the periodic table. Thus, the correct option is B.
What are Periods?
The periods are the horizontal rows of the periodic table. Each period in the periodic table corresponds to the successive occupation of the orbitals in a valence shell of the atom, with the long periods corresponding to the occupation of the orbitals of a d-subshell in the chemical elements.
The different groups belongs to different types of elements in the periodic table such as Group 1A belongs to alkali metals, Groups 3B-2B belongs to transition metals, and Group 7A belongs to halogens.
Therefore, the correct option is B.
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Answer:
The answer is B. Numbers
Explanation:
Got it right on edge 2023
please solve
please solve a - e
The size P of a certain insect population at time t (in days) obeys the function P(t) = 500 e 0.04t (a) Determine the number of insects at t=0 days. (b) What is the growth rate of the insect populatio
Answers
Answer:
(a) When t=0, we have p(0) = 500 e^(0.04*0) = 500 e^0 = 500(1) = 500. Therefore, there are 500 insects at t=0 days.
(b) The growth rate of the insect population is given by the derivative of the function p(t): p'(t) = 500(0.04)e^(0.04t) = 20e^(0.04t). This means that the growth rate is not constant, but rather it increases as time t increases. For example, at t=1 day, the growth rate is p'(1) = 20e^(0.04*1) = 20e^0.04 ≈ 21.64. This means that the insect population is growing at a rate of approximately 21.64 insects per day at t=1 day.
what two types of defects does a cancerous cell possess? view available hint(s)for part a what two types of defects does a cancerous cell possess? cancerous cells lack the ability to carry out cellular respiration and photosynthesis. cancerous cells are prevented from dividing and have inhibited growth patterns. cancerous cells possess defects that make proteins required for cell growth inactive and tumor suppressor genes active. cancerous cells possess defects that make proteins required for cell growth active and tumor suppressor genes inactive.
Answers
Two types of defects that cancerous cells posses are that they are prevented from diving and have inhibited growth patterns.
Cancerous cells have altered growth patterns and are unable to divide. Cancerous cells have flaws that turn tumour suppressor genes on and dormant proteins necessary for cell development active. This implies that option B and D marks the appropriate choice.
Cancer cells exhibit poorly differentiated growth and division patterns, aberrant membranes, cytoskeletal proteins, and shape. There may be a gradual change from normal cells to benign tumours to malignant tumours when the abnormalities in cells progresses.
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order the relationship between muscle fibers, fascicles, myofibrils, and muscles from largest structure to smallest
Answers
Answer:
The answer is below
Explanation:
From the scientific and medical knowledge of human anatomy, placing aforementioned body structures in order of largest to the smallest, we have the following
1. muscles
2. fascicles
3. muscle fibers
4. myofibrils
Give reasons. Cells need energy
Answers
Answer:
#carry on learning
hope it's held
mark me as brainliest
All living cells need energy to function in order for the chemical reactions occurring in the cells to take place. In humans this energy is obtained by breaking down organic molecules such as carbohydrates, fats and proteins.
Part 2: Internal Anatomy (cont.)
Complete the following statements.
1. The pharynx is located between segments
Answers
1. The pharynx is located between segments of the respiratory and digestive systems.
The pharynx is a muscular tube that serves as a common pathway for both air and food. It is located at the back of the throat and connects the nasal and oral cavities to the esophagus and larynx. The pharynx is divided into three regions: the nasopharynx, oropharynx, and laryngopharynx.
The nasopharynx is located behind the nasal cavity and above the soft palate. It serves as a passageway for air, connecting the nasal cavity to the rest of the respiratory system. The oropharynx is located behind the oral cavity and extends from the soft palate to the epiglottis. It plays a role in both the respiratory and digestive systems, as it serves as a passage for both air and food. The laryngopharynx is the lowest part of the pharynx and is located behind the larynx. It leads to the esophagus for food passage and the larynx for air passage.
The pharynx plays a crucial role in the process of swallowing. When food is swallowed, it passes through the pharynx before entering the esophagus for digestion. The pharyngeal muscles contract in a coordinated manner, pushing the food bolus downward and preventing it from entering the airway.
In summary, the pharynx is located between segments of the respiratory and digestive systems. It acts as a common pathway for both air and food, playing a vital role in swallowing and directing the passage of substances into the appropriate pathways of the respiratory and digestive tracts.
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1. If you drive at 100 km/hr, S for 600 km,how long will it take you to go their?
2. A car traveled at a velocity of 50 km/h,N for .5 h. How far did the car travel?
Thank you I need it now 2/21/22
Science
Answers
Answer:
1: 6hr 2: 25km
Explanation:
The equation velocity=distance/time (v=d/t) is useful for these problems.
1: v=100 km/hr, d=600km
plugging into the equation, we get 100km/hr=600km/t
rearrange to get t=600/100, or t=6hr
2: v=50km/hr, t=5hr
plugging in: 50km/hr=d/0.5hr
rearrange: d=(50km/hr)*0.5hr, or d=25km
don't forget your units, and have a lovely day :)
What is the normal/average pH level of lake in a healthy ecosystem?
Answers
Usually fresh water lakes have a pH range between 6.5 to 8.5, this is appropiate for many organisms life and development.
The radius of a circle is 16.7m. Find the circumference to the nearest tenth
Answers
Answer:
Explanation:
circumcerence =pie times diameter
multiply radius by 2 to get diameter. which would equal 33.4 and 33.4 times pie is 104.93
answer is 104.93
which compound is orgaic
Answers
Answer: organic compound, any of a large class of chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen. The few carbon-containing compounds not classified as organic include carbides, carbonates, and cyanides.
Explain mechanism of transportation in mollusca
Answers
Answer:
The mollusk circulatory system uses a heart to pump blood through the organism, and the respiratory system of aquatic mollusks centers around their gills. The heart pumps blood through blood vessels that lead from the gills into body cavities called hemocoels.
Are primary and secondary schizocoely analogous or homologous? Why?
Answers
Primary and secondary schizocoely are homologous. Homology refers to the similarity in structure or function of different organisms due to their shared evolutionary ancestry.
In this case, both primary and secondary schizocoely are processes of coelom formation in different groups of animals.
Primary schizocoely is a process of coelom formation in protostomes, where the coelom is formed by splitting the mesoderm into two layers. The splitting forms a cavity that becomes the coelom. Secondary schizocoely, on the other hand, is a process of coelom formation in deuterostomes, where the coelom is formed from mesodermal out pocketing of the archenteron.
Despite the differences in the specific mechanisms of coelom formation, both primary and secondary schizocoely involve the mesoderm layer of the developing embryo. Both processes also result in the formation of a true coelom, which is a fluid-filled cavity surrounded by mesodermal tissue. These similarities suggest that primary and secondary schizocoely are homologous structures, indicating that they evolved from a common ancestor.
In conclusion, primary and secondary schizocoely are homologous processes of coelom formation in different groups of animals. The similarities in their mechanisms and resulting structures suggest that they evolved from a common ancestor, and therefore, they are homologous.
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nitrogen is the most abundant element in the atmosphere and is readily available for uptake by plants and animals directly from the atmosphere?
Answers
Nitrogen is not directly obtained by plants from the atmosphere. Despite being the most prevalent component in the air.
It typically takes the form of dinitrogen. Although it consists 78 percent of a atmosphere, plants cannot use it. By means of bacteria, certain algae, lightning, as well as other processes, it is absorbed into the soil. The N2 must be changed through a procedure known as nitrogen fixation for it to be utilized by plants. Fixation transforms atmospheric nitrogen into forms that plants' root systems can absorb. Following hydrogen, carbon, and oxygen, nitrogen is the fourth-most abundant element (by moles) in the living biomass. Nitrogen is necessary for life. All proteins or nucleic acids contain nitrogen because it is a component of all nucleotides and amino acids. Nitrification: The type of nitrogen that is most readily absorbed by plants is nitrate.
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Ways to memorise and never forget?
Answers
Answer:
sleep earlier
Explanation:
Answer:
Write things down
Explanation:
how did the mass extinction at the end of the paleozoic era set the stage for the appearance of new organisms during the mesozoic?
Answers
Underwater life and its life forms were wiped out during the mass extinction that occurred at the end of the Paleozoic Era.
The interactions between the environment and the organisms in ancient ecosystems changed, driving the remaining animals to land and bringing the new Mesozoic organisms with them. Cycads, glossopterids, early conifers, and ferns had already begun to colonise the earth by the end of the Paleozoic. The marine biota was severely damaged by the Permian extinction, which occurred 251.4 million years ago. Tabulate and rugose corals, blastoid echinoderms, graptolites, the trilobites, and the majority of crinoids perished. The largest mass extinction of living things on Earth took place towards the end of the Permian, at the transition between the Paleozoic and Mesozoic (251.0 0.4 Ma).
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