Year 12 Ecology

Which of the following ecological problems is NOT the result of burning fossil fuels? 

• greenhouse effect
• ozone depletion 
• climate change 
• acid rain

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

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

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

Modern lifestyles have led to increased demands for a wide variety of consumable products. The packaging of these products has caused environmental problems associated with

• food web contamination

• urbanization

• ozone depletion

• solid waste disposal

Human impact on the environment is often more dramatic than the impact of most other living things because humans have a greater

• need for water

• need for food

• ability to alter the environment

• ability to adapt to change

Which of the following actions is most likely to have a negative effect on Earth's ecosystems?

• the construction of new facilities to recycle metals

• regulations minimizing air pollution

• a gradual increase in human population

• protection of native species

Which of the following can protect biodiversity?

• Habitat destruction

• Introduction of invasive species

• Wildlife conservation projects

• Over-using limited resources

Which of these is NOT a negative impact of deforestation?

• increased soil erosion

• reduced biodiversity

• disruption of the water table

• increased water quality

Overpopulation is

• Having too many resources

• Having an excessive amount of one species in a compact ecosystem (too many)

• How many organisms can live in the same space at one time

• Something that stops population growth.

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

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