7.8-4.4: Populations and Resources End of Unit Assessment

Front

What is a population in an ecosystem?

Back

A population is a group of individuals of the same species living in a specific area at the same time.

Front

What factors can cause a population to increase?

Back

A population can increase if more individuals are born than die, or if individuals migrate into the area.

Front

What factors can cause a population to decrease?

Back

A population can decrease if more individuals die than are born, or if individuals migrate out of the area.

Front

What is the role of predators in an ecosystem?

Back

Predators help control the population sizes of prey species, maintaining balance in the ecosystem.

Front

What is the relationship between prey and predator populations?

Back

Typically, when prey populations increase, predator populations also increase, and vice versa.

Front

What does it mean for a population to be stable?

Back

A stable population means that the number of births equals the number of deaths over a period of time.

Front

What is carrying capacity?

Back

Carrying capacity is the maximum number of individuals of a species that an environment can support sustainably.

Front

How do resources affect population sizes?

Back

Availability of resources like food, water, and shelter directly influences the growth and decline of populations.

Front

What is a food chain?

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

Front

What is a food web?

Back

A food web is a complex network of interconnected food chains in an ecosystem.