What is the crime committed by the organic farm?

Federal prosecutors say the farmers are responsible for a seven-year scheme that tricked thousands of customers into paying premium prices for products that were marketed as organic but were not.

What animal has the highest level of DDT in its tissues?

The highest amount of DDT and derivatives residues were found in carnivore fish species, C. striatus which is the top predator of food web.

What happens to pelicans when they have a high level of DDT in their bodies?

Since a pelican eats a lot of fish, more DDT builds up in its tissues and is trapped in its body. What happens to pelicans when they have a high level of DDT in their bodies? The pelican's eggs break very easily, and they are unable to reproduce.

How does the increase of biodiversity affect the health of an ecosystem quizlet?

Biodiversity stabilizes ecosystems during climate extremes. that diverse communities are more stable because they exhibit resistance during extreme climate events." Working with nature, rather than against it, brings multiple benefits also for preserving our climate.

What are the two measures of species diversity in an ecosystem quizlet?

What is the difference between these two measures of biodiversity? Species richness is the no. of different species in a community but diversity index is how many in each species present.

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What is the change in population and diversity of different species present in an ecosystem over time?

Ecological succession is a series of progressive changes in the species that make up a community over time.

How might a reduction in species diversity affect the other components of biodiversity?

Reduced genetic diversity increases the probability of species extinction or of substantial reductions in the population of a species due to changing environmental conditions (such as, a change in climate or the introduction of a new disease).

How are biodiversity and the cycling of matter related to maintaining ecosystem services quizlet?

Biodiversity increases the stability and abundance of our natural capital which leads to greater supply of ecosystem services.

How do gases like CO2 contribute to Earth's warming temperatures quizlet?

How do gases like CO2 contribute to Earth's warming temperatures? The increasing concentration of CO2 and several other greenhouse gases is trapping more heat in the Earth's atmosphere.

Which types of threats are having the largest impact on biodiversity?

The three greatest proximate threats to biodiversity are habitat loss, overharvesting, and introduction of exotic species. The first two of these are a direct result of human population growth and resource use. The third results from increased mobility and trade.

What did DDT do to bald eagles?

The culprit was DDT - a widely used pesticide that, when ingested, prevented the eagles from reproducing successfully by weakening their offsprings' eggshells. The bald eagle population declined and became critically endangered.

What animals were affected by DDT?

Background. The fact that DDT (or dichloro-diphenyl-trichloroethane) played a role in the decline of bald eagle and other bird-of-prey populations (e.g., ospreys, brown pelicans) is now commonly appreciated among most biologists.

Is DDT still in use?

The United States banned the use of DDT in 1972. Some countries outside the United States still use DDT to control of mosquitoes that spread malaria. DDT and its related chemicals persist for a long time in the environment and in animal tissues.

Which organism is most affected by DDT Why?

DDT is highly toxic to aquatic animals (14). DDT affects various systems in aquatic animals including the heart and brain (14). DDT is highly toxic to fish (14). Fish have a poor ability to detect DDT in water (14).

What happens when DDT enter in food chain?

When an animal consumes food having DDT residue, the DDT accumulates in the tissue of the animal by a process called bioaccumulation. The higher an animal is on the food chain (e.g. tertiary consumer such as seals), the greater the concentration of DDT in their body as a result of a process called biomagnification.

Which organisms contain the most DDT?

Worms, grasses, algae, and fish accumulate DDT. Apex predators, such as eagles, had high amounts of DDT in their bodies, accumulated from the fish and small mammals they prey on.

How does the use of fossil fuels affect the cryosphere?

How does the use of fossil fuels affect the cryosphere? Higher levels of greenhouse gases in the atmosphere cause sea ice to melt. Why are rising carbon dioxide levels in the atmosphere harmful? Carbon dioxide traps heat in Earth's atmosphere.

How does an increase in atmospheric greenhouse gases increase global temperature quizlet?

How does increases in greenhouse gases like carbon dioxide (CO2) relate to global warming? Greenhouse gases trap heat from the Sun, causing the atmosphere to get warmer.

How does ocean warming lead to changes in marine metabolic and reproductive processes?

Fish are cold-blooded so an increase in ocean temperatures will increase metabolism, driving the demand for more oxygen. However, warm water holds less dissolved oxygen, meaning that there is less oxygen available to meet this greater demand. This can lead to increased mortality and decreased reproductive capacity.

How are food webs used to help explain ecosystem interactions?

Food webs can be used to study bottom-up or top-down control of community structure. Food webs illustrate energy flow from primary producers to primary consumers (herbivores), and from primary consumers to secondary consumers (carnivores).

How are biodiversity and the cycling of matter related to maintaining ecosystem services?

Many key ecosystem services provided by biodiversity, such as nutrient cycling, carbon sequestration, pest regulation and pollination, sustain agricultural productivity. Promoting the healthy functioning of ecosystems ensures the resilience of agriculture as it intensifies to meet growing demands for food production.

How biodiversity is important to ecosystems and give examples of how it is important to humans?

Ecological life support— biodiversity provides functioning ecosystems that supply oxygen, clean air and water, pollination of plants, pest control, wastewater treatment and many ecosystem services. Recreation—many recreational pursuits rely on our unique biodiversity , such as birdwatching, hiking, camping and fishing.

What are consequences of biodiversity?

Biodiversity underpins the health of the planet and has a direct impact on all our lives. Put simply, reduced biodiversity means millions of people face a future where food supplies are more vulnerable to pests and disease, and where fresh water is in irregular or short supply. For humans that is worrying.

What are threats of biodiversity?

The core threats to biodiversity are human population growth and unsustainable resource use. To date, the most significant causes of extinction are habitat loss, introduction of exotic species, and overharvesting. Climate change is predicted to be a significant cause of extinction in the coming century.

How could the loss of biodiversity affect humans it may cause an increase in the human population as competition is reduced?

How could the loss of biodiversity affect humans? It may cause an increase in the human population as competition is reduced. It may lead to the loss of potential medicines, foods, and products. It could lead to a decrease in infectious and other diseases that affect humans.