Ecology Quiz

The illustration below shows a biogeochemical cycle. Which gas is represented by the black arrows?

• oxygen

• nitrogen

• hydrogen

• carbon dioxide

This diagram represents a closed terrarium exposed to sunlight. What must happen for the carbon cycle to continue in this terrarium?

• All organisms must continue to exchange gases.

• The snails must double their production of carbon dioxide.

• The plant must produce carbon dioxide at a faster rate.

• The decomposers must begin to produce oxygen.

How do renewable and nonrenewable resources differ?

• All renewable resources must be recycled, while nonrenewable resources cannot be recycled.

• All nonrenewable resources are natural resources, while all renewable resources are human-made.

• Nonrenewable resources can be replaced quickly by natural processes, while renewable resources cannot.

• Renewable resources can be replaced quickly by natural processes, while nonrenewable resources cannot.

Which human activity is most likely to cause global temperature increases?

• Overfishing in coastal ecosystems

• Burning fossil fuels to maximize energy production

• Creating agricultural waste that runs off into a nearby river

• Constructing new roads through an established neighborhood

Which is the most likely long-term effect of deforestation?

• Loss of biodiversity

• Ecological extinction

• Increased number of predators

• Significant increase in oxygen levels

A scientist observes an increase in the negative effects of carbon dioxide on the environment. What might have occurred to cause this change?

• Increased overfishing

• Increased aquaculture

• Increased planting of bushes

• Increased burning of fossil fuels

What will most likely be the result as humans move into new areas, forests are clear cut and housing developments are built?

• Global temperatures will decrease because trees are removed.

• Many organisms will lose their homes because their habitats have been destroyed.

• Better sanitation in the area will reduce the amount of pollution.

• The rainfall in the area will increase because there will be increased runoff.

What will most likely occur if the population of the world continues to increase at predicted rates?

• There will be an increase in biodiversity as a result of improvements in technology.

• There will be more rapid depletion of natural resources.

• The human race will rapidly become extinct.

• All human diseases will be eliminated.

Which is a biotic limiting factor that would influence the growth of a deer population?

• a forest fire

• high temperatures

• amount of plant growth

• amount of monthly rainfall

In nature, which type of behavior causes animals to produce aggressive displays and sounds?

• imprinting

• territoriality

• conditioning

• habituation