Semester 1 Review APES

Front

What is the demographic transition model?

Back

A model that describes the transition of a society from high birth and death rates to low birth and death rates as it develops economically.

Front

What happens to the death rate during the transition from preindustrial to transitional phase?

Back

The death rate drops first.

Front

Which population has the greatest potential for rapid growth?

Back

Populations with large numbers of young offspring.

Front

What is a trophic cascade?

Back

A series of changes in the population sizes of organisms in a food web, triggered by the removal or addition of a top predator.

Front

What role do wolves play in the Yellowstone ecosystem?

Back

Wolves are a top predator that helps maintain the balance of the ecosystem by controlling the population of herbivores.

Front

What is a primary producer?

Back

Organisms that produce their own food through photosynthesis, such as plants.

Front

What is a primary consumer?

Back

Herbivores that eat primary producers.

Front

What is a secondary consumer?

Back

Carnivores that eat primary consumers.

Front

What is a tertiary consumer?

Back

Top predators that eat secondary consumers.

Front

What stage of the demographic transition model is characterized by high birth and death rates?

Back

Stage 1.