While dry cleaners are small businesses, they generate relatively large volumes of hazardous substances. EPA estimates the average dry cleaner generates 660 gallons of hazardous wastes a year. Unlike petroleum contamination which may break down over time by naturally - occurring bacteria in the environment, the chlorinated solvents that are used by dry cleaners are resistant to biodegradation. As a result, groundwater contamination from dry cleaners has a greater potential to migrate off-site which can be problematic since dry cleaners are often located within proximity to residential neighborhoods. Indeed, a 2002 Florida study found that dry cleaner contamination had migrated off-site at 57 percent of the contaminated sites. Due to these types of environmental hazards when commercial land is sold require a Phase 1 Environmental Assessment according to the Comprehensive Environmental Response, Compensation and Liability Act.

Why would the type of monitoring required as part Phase 1 Environmental Assessments be important if a dry cleaner was being sold?

Group of answer choices

This type of monitoring will allow the government to only sell land to businesses that have environmentally friendly practices.

The monitoring will allow the government to determine which type of business is better for the environment so dangerous businesses can be closed.

The monitoring will indicate any environmental damage done that should be remediated prior to selling the land.

The monitoring prevents the land from being resold to any dry cleaning businesses which can be damaging to the environment.

Answer: 1. Mitosis

2. Answer A.

Explanation:

Stick insects that reproduce asexually are less biologically diverse because they can't evolve as quickly as species that reproduce sexually can. Thus, option A is correct.

Asexual reproduction, in contrast to sexual reproduction, only contributes to genetic variety in the population if a chance mutation in the organism's DNA is passed on to the progeny.

Evolution can occur gradually. Asexual creatures often evolve relatively quickly following a dramatic mutation and do not need as many generations to accumulate adaptations as do populations that reproduce sexually.

Asexual reproduction has the benefit of allowing for rapid population growth under the right circumstances. You only require one parent. Since you don't require a partner, it is more time and energy efficient.

Therefore, new organisms are usually genetically identical to the parent.

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Answer:

The answer is S-phase

Explanation:

Phases of the cell cycle. The division cycle of most eukaryotic cells is divided into four discrete phases: M, G1, S, and G2. M phase (mitosis) is usually followed by cytokinesis. S phase is the period during which DNA replication occurs

Answer:

Explanation:

How did media attention affect Barack Obama's presidential performance?(A)(B)(C)(D)He made a concerted effort to listen to Congress' concerns about his policies.He decided to go on Fox News in an attempt to win over Republican voters.He started traveling the country to give speeches about his policy goals.He began meeting in private with Speaker of the House Nancy Pelosi.

During infection with Listeria, an intracellular bacterium, APCs will present antigen on MHC II molecules and triggers a phagocytic property by stimulating the release of macrophages.

What is the role of macrophages in Phagosomes?

Phagosome maturation was formerly regarded to be a very simple notion that described how much phagosomes had united with lysosomes.

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The function of telomerase at the telomere is to add new DNA to the shorter strand of the telomere overhang.

Telomeres are the protective caps at the end of each chromosome, which consist of repeated DNA sequences that shorten with each cell division. Telomerase is an enzyme that adds new DNA to the telomere, which helps to maintain its length and prevent it from getting too short.

This is important because when the telomere becomes too short, it can no longer protect the chromosome from damage, which can lead to cell death or mutations that can cause diseases like cancer. Therefore, telomerase plays a critical role in maintaining the stability and integrity of the genome. Option A is the correct answer.

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Answer:

The sarcoplasmic reticulum ( SR) is a membrane -bound structure found within muscle cells that is similar to the smooth endoplasmic reticulum in other cells. The main function of the SR is to store calcium ions (Ca 2+ ).

Explanation:

All are correct, the development of flower petals might cause increased attraction for pollinators, increased attraction for predators, and increased surface area for wind pollination.

Flowers' reproductive organs are encircled by petals, which are modified leaves. To draw pollinators, they are frequently brightly colored or shaped differently. The corolla is the collective name for a flower's petals. Functions of the petal include scent production and color changing which is used to attract pollinators and also attract predators.

Flowers also exhibit different types of pollination and wind pollination is one of it, for flowers that undergo wind pollination require little or no petal since the pollens are to be scattered by wind. The development of the flower's petal in terms of the size, scent, colour depends on what type of pollination, whether the flower attracts pollinators or/and predators.

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Isotonic exercise has a bigger impact on body temperature and metabolic rate of skeletal muscles compared to isometric exercise.

Isotonic exercise refers to physical activity that involves continuous muscle contraction and movement, such as running, cycling, or swimming. During isotonic exercise, the muscles generate more heat as they contract and relax, leading to an increase in body temperature. This rise in body temperature is accompanied by an elevation in metabolic rate, as the muscles require more energy to sustain the movement. On the other hand, isometric exercise involves muscle contractions without significant movement, such as holding a static position or pushing against an immovable object.

Isometric exercise generally results in a lesser increase in body temperature and metabolic rate compared to isotonic exercise. While isometric exercise still requires muscle activation, the lack of dynamic movement limits the overall impact on body temperature and metabolic demands. It's worth noting that the intensity and duration of exercise play a significant role in the extent of changes in body temperature and metabolic rate. Higher-intensity or longer-duration exercise sessions, regardless of the type, can have a greater impact on these factors.

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Answer:

Overharvesting

Explanation:

Too much harvest and planting causes the soil to wear down and be less useful.

Answer:

B) Climate Change

Explanation:

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Answer:

D, A, B, C is the correct order for the steps of action potential.

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DNA is important in identifying genetic relationships within a group, but it alone is not sufficient to determine complex social constructs like race, whiteness, or property; the inclusion of social, cultural, and historical factors is crucial in understanding these concepts.

Biological anthropologists and genome scientists should consider the relationship between Europeans and Indigenous people in their research to provide a more comprehensive understanding of human genetic diversity and population history.

DNA analysis can provide valuable insights into genetic relationships within a group, such as determining genetic ancestry or identifying related individuals. However, race, whiteness, and property are social constructs that go beyond genetic factors and are shaped by historical, cultural, and socioeconomic factors. These concepts are complex and cannot be solely explained by genetic data. Therefore, it is important for researchers, including biological anthropologists and genome scientists, to recognize the limitations of genetic data and consider the broader social context when studying race, whiteness, and property.

In the context of researching Europeans and Indigenous people, it is crucial for researchers to acknowledge and incorporate the historical and ongoing relationships between these groups. This includes understanding colonization, displacement, and the impact of power dynamics on genetic diversity and health outcomes. By including this relationship in their research, scientists can contribute to a more accurate and nuanced understanding of human genetics and promote social and scientific equity.

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The type of B cell that aids in the quick response to subsequent exposures to an antigen and rapidly produces antibodies is the memory B cell.

Memory B cells are a specialized type of B cell that are formed after an initial exposure to an antigen. They play a crucial role in the immune response by "remembering" the antigen and enabling a faster and more efficient immune response upon subsequent exposures. Memory B cells are able to quickly recognize and bind to the antigen, leading to a rapid production of antibodies specific to that antigen.

In conclusion, memory B cells are responsible for the quick response to subsequent exposures to an antigen and the rapid production of antibodies. Their presence allows the immune system to mount a faster and more effective defense against previously encountered pathogens, contributing to the overall effectiveness of the immune response.

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Answer:

Two key events must happen to ensure that the protein made is the one specified by the mRNA: 1) tRNAs must read mRNA codons correctly and 2) tRNAs must deliver amino acids corresponding to each codon. At the midpoint of the tRNA sequence—site of base pairing with mRNA.

Explanation:

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by burning fossil fuels

If the infrastructure of a place cannot provide the necessary resources to a population, the quality of life decreases. For example, the lack of water increases the rate of disease due to lack of hygiene, likewise, if the shortage is extreme it can also increase mortality due to dehydration in low-income people. Lack of electricity would also affect mortality rates, since it would affect telecommunications and hospital care, for example.

Answer:

The best explanation for the increased lymphocyte levels in Kaya is that she was not tissue typed prior to her surgery, and her body is mounting an immune response.

Explanation:

When performing an organ transplant, it must be verified whether the organ to be transplanted is compatible -by tissue typing- with the recipient, since it is recognized as a foreign body by the body and can be rejected.

One of the immunological responses to organ rejection is called cell rejection, involving T-helper and cytotoxic lymphocytes.

It is very likely that in Kaya's case the tests have not been performed correctly, and she is experiencing rejection of the organ she received. The progressive increase in lymphocytes may be an indication of this.

The other options are not possible because:

Answer:

The correct answer is - B. Lichens.

Explanation:

Lichens are one of the pioneer species that can grow on bare rock such as moraine and help make soil for further ecological succession and making ground for other species.

Breaking the bare rocks to convert into the soil is part of the primary succession. Lichens are colonized over these rocks and they contain acid which leads to the breakdown of the moraine and other rocks.

Sure, I can help you with your question! To determine if you have bought enough dozens of eggs for all the contestants who have registered for the race in Python, you can use the following code:```pythoneggs_needed = dozens_needed = eggs_needed // 12if eggs_needed % 12 != 0:  

dozens_needed += 1print("You need to buy at least", dozens_needed, "dozen eggs.")```

Here's how the code works:

1. The `input()` function is used to ask the user how many eggs are needed for the race. The value entered is converted to an integer using the `int()` function and stored in the `eggs_needed` variable.

2. The number of dozens of eggs needed is calculated by dividing the number of eggs needed by 12 using the `//` operator, which performs integer division (i.e., it returns the quotient without the remainder). The result is stored in the `dozens_needed` variable.

3. If the number of eggs needed is not a multiple of 12 (i.e., there is a remainder), then one extra dozen of eggs is needed to make up for the remaining eggs. This is accounted for by adding 1 to the `dozens_needed` variable.4. Finally, the result is printed out using the `print()` function, which displays a message telling the user how many dozens of eggs they need to buy.

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In the ecological system described, the interactions between plants, rabbits, and foxes form a food chain where each organism is connected to another through feeding relationships. The plants serve as the primary producers, converting sunlight into energy through photosynthesis.

The rabbits consume a portion of the plant population, while the foxes prey on the rabbits. This interconnectedness is illustrated by the directed graph provided, showing the flow of energy and resources through the system.

When plants consume rabbits and foxes, it represents the process of decomposition and nutrient recycling in the ecosystem. When animals die and decompose, their organic matter is broken down by decomposers like bacteria and fungi. This decomposition releases nutrients back into the soil, making them available for uptake by plants. In this way, the plants benefit from the nutrient-rich soil, enabling their growth and development.

The recycling of nutrients through the consumption and decomposition of organisms is a fundamental process in ecosystems. It ensures the cycling of vital elements like carbon, nitrogen, and phosphorus, allowing them to be reused by different organisms at different trophic levels. In this particular system, the plants benefit from the decomposition of rabbits and foxes, which contributes to their overall productivity.

It is important to note that in real ecosystems, the interactions and energy flow are more complex than this simplified model. Additional factors such as predation, competition, and other ecological processes influence the population dynamics and stability of the system. Nonetheless, the concept of nutrient recycling through decomposition highlights the interconnectedness and interdependence of different organisms in an ecological community.

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Answer:Every cell in an animal requires oxygen to perform cellular respiration. Cellular respiration is the process by which animals take in oxygen and exchange it for carbon dioxide and water as waste products.

Explanation:

Every cell in an animal requires oxygen to perform cellular respiration. Cellular respiration is the process by which animals take in oxygen and exchange it for carbon dioxide and water as waste products.

Cellular respiration is dependent upon an animal's respiration rate because

respiration rate depends on the amount of oxygen inhaled and available to

break down food(cellular respiration).

The oxygen inhaled by animals enter into the cells of the body through the

blood.  Carbon dioxide formed in cells is then replaced by the oxygen.

The less the amount of oxygen inhaled during respiration , the less the

cellular respiration that takes place in the animal and vice versa.

The above analysis shows that respiration rate and cellular respiration have

a direct relationship which explains why they are dependent on each other.

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Answer:

in metric system, millimeters, centimeters, meters, kilometers are the most often used units

US customary system, inch, foot, yard, mile are the most often used units

Answer:

Amber, which is in fact a fossil, is often held in the same class as semi-precious stones such as turquoise and jade because of its ornamental uses. Unlike these stones, amber is not mineralized. Rather, it is simply the fossil of resin. Most that exists today is between 30 and 90 million years old. derived from the resin of extinct species of trees.

Explanation:

Answer:

Gas bubbles, precipitation, color change, temperature change, if some light is produced, the volume changes, or taste and or smell changes.

Explanation:

I learned these were the 7 signs of a chemical reaction but some schools and curriculums vary on how many signs of reactions there are. I hope this helped!

Answer: Around 30-50 degrees of latitude. This is roughly right above and below the equator.

Answer: HOPE THIS IS GOOD

Explanation:Why do we eat?

we eat because food gives us the nutrition we need to go throughout  the day and we need energy so we can live and have fun! but then again if we don't eat the right foods then that can also affect us in bad ways. so  we should always to keep a balanced diet.

overall we eat to satisfy our hunger as well and to have energy for throughout the day  

Photosynthesis is the biological process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of glucose and oxygen.

It is the primary process responsible for generating and maintaining oxygen levels in the Earth's atmosphere, as well as serving as the foundation of most food chains and ecosystems.

During photosynthesis, plants use pigments, primarily chlorophyll, located in specialized structures called chloroplasts, to capture light energy. This energy is then used to convert carbon dioxide (CO2) from the atmosphere and water (H2O) from the soil into glucose (C6H12O6) and oxygen (O2).

This process occurs in two main stages: the light-dependent reactions and the light-independent reactions (also known as the Calvin cycle).

Overall, photosynthesis is a crucial process that sustains life on Earth by producing oxygen and providing the energy-rich molecules necessary for organisms to carry out their metabolic activities.

It represents the fundamental mechanism by which autotrophic organisms convert solar energy into chemical energy, driving the functioning of ecosystems and ultimately supporting all life forms.

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Answer:

It breaks down rock into smaller pieces that can become sedimentary rock.

Explanation:

Weathering is the physical disintegration and chemical decomposition of rocks to form sediments and soils.

The process of weathering is very important for the formation of rocks because it breaks down rocks into smaller pieces.

Answer:

1. D

2. J

3. A

4. B

5. H

6. E

7. F

8. G

9. C

10. I

Hope this helps! ;)