BIOLOGY FLASHCARD on Chapter 5 "Populations"

Front

What causes a population to grow?

Back

A population grows when the birthrate becomes higher than the death rate.

Front

What are some reasons an area might be sparsely populated?

Back

Reasons include lack of natural resources, land covered with ice, and land that cannot be developed.

Front

What is an example of density dependent limiting factors?

Back

Disease is an example of density dependent limiting factors.

Front

What happens if a population exceeds its carrying capacity?

Back

If a population grows larger than the carrying capacity, the death rate rises.

Front

What is the term for the movement of individuals into an area?

Back

The movement of individuals into an area is known as Immigration.

Front

What is carrying capacity?

Back

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

Front

What is emigration?

Back

Emigration is the movement of individuals out of a population or area.

Front

What are density independent limiting factors?

Back

Density independent limiting factors are environmental factors that affect populations regardless of their density, such as natural disasters.

Front

How does a high birthrate affect population growth?

Back

A high birthrate contributes to population growth by increasing the number of individuals in a population.

Front

What role do natural resources play in population density?

Back

Natural resources influence population density; areas with abundant resources tend to have higher populations.