Human Impact on the Environment

Front

What is succession in ecology?

Back

Succession is the natural replacement of species that takes place in an area over time.

Front

What is the major difference between primary and secondary succession?

Back

Primary succession begins on bare rock, while secondary succession starts on soil.

Front

What happens to a species introduced to a new environment with no natural predators?

Back

The species may overpopulate greatly due to lack of competition.

Front

What is recycling?

Back

Recycling is the process of taking trash and turning it into new products.

Front

What ecological problem has been addressed by changing the design of air conditioners and aerosol cans?

Back

The hole in the ozone layer.

Front

What is biological magnification?

Back

Biological magnification is the process where poisons build up in lakes and streams and increase in concentration as they move up the food chain.

Front

What is primary succession?

Back

Primary succession is the ecological process that occurs in an area where no soil exists, such as after a volcanic eruption.

Front

What is secondary succession?

Back

Secondary succession is the ecological process that occurs in an area where soil is present but has been disturbed, such as after a forest fire.

Front

What is an example of an invasive species?

Back

Rabbits in Australia, which overpopulated after being introduced without natural predators.

Front

What is the impact of deforestation on biodiversity?

Back

Deforestation leads to loss of habitat, which decreases biodiversity.