Ecology EOC Review

Front

What happens to the amount of available energy in the energy pyramid as it moves up through the different levels?

Back

It decreases.

Front

What conclusion can be made from the graph showing atmospheric carbon dioxide levels since 1960?

Back

Atmospheric carbon dioxide levels have increased steadily since 1960.

Front

What is a species that plays a critical role in the health and maintenance of an ecosystem?

Back

Keystone species.

Front

What happens to the carrying capacity for squirrels if part of their forest habitat is destroyed?

Back

It will decrease.

Front

If there is 1000 Kcal available in the producers (trophic level 1), how much energy is available in the herbivores (trophic level 2)?

Back

100 Kcal.

Front

What is the definition of a keystone species?

Back

A species that has a disproportionately large effect on its environment relative to its abundance.

Front

What is the concept of carrying capacity in an ecosystem?

Back

The maximum number of individuals of a species that an environment can support sustainably.

Front

What is the primary source of energy for most ecosystems?

Back

The sun.

Front

What is the role of producers in an ecosystem?

Back

Producers convert solar energy into chemical energy through photosynthesis.

Front

What is an invasive species?

Back

A non-native species that spreads widely in a new habitat and causes harm to the ecosystem.