Benchmark Remediation Topic 2.2

Toxins accumulate in the tissues of organisms as they pass through a food chain/web.

• eutrophication
• biomagnification
• ecological succession
• symbiosis 

Which of the following issues is the cause of the other environmental impacts caused by humans?

• pollution
• human population growth
• climate change
• habitat destruction 

Which of the following results when nitrogen and sulfur-containing compounds mix with water in the atmosphere?

• global warming
• ozone depletion 
• acid rain
• thermal pollution

Which of the following results when levels of CO₂ in the atmosphere increase due to fossil fuel burning?

• ecological succession 
• acid rain 
• ozone depletion
• global warming

Fishermen have harvested certain fish to the point where the population of that fish is decreasing. This level of direct harvesting could cause

• ecosystems to be improved for future generations
• ecosystems to be severely damaged
• the restoration of environmental stability
• all other fish species to increase in number

The tall wetland plant, purple loosestrife, was brought from Europe to the United States in the early 1800s as a garden plant. The plant's growth is now so widespread across the United States that it is crowding out a number of native plants. This situation is an example of

• an unintended effect of adding a species to an ecosystem

• the results of the use of pesticides

• the recycling of nutrients

• the flow of energy present in all ecosystems

Which of the following natural resources would be described as finite (non-renewable)?

• hydro power (ie. Niagara Falls Power Authority)

• wind energy

• solar energy

• fossil fuels

This graph shows the sources of the nitrogen entering the Gulf of Mexico as pollution. What is one conclusion you can make based on the information in the graph?

• Nitrogen that comes from the atmosphere is more harmful than nitrogen that comes from crops.

• Most nitrogen pollution found in the Gulf of Mexico comes from farming crops.

• Corn and soybeans are the only crops associated with nitrogen pollution.

• Nitrogen is not a problem in the Gulf of Mexico.

The largest source of pollution in the ocean comes from __________.

• Oil Spills

• Acid Rain

• Runoff

• Wind

How are phytoplankton similar to small trees?

• Both are at the top of the food chain

• Both conduct photosynthesis

• Both grow in soil

• Both are about the same size