Population - Ecosystems

Question 1

What is the formula for calculating population growth?

Answer 1

Growth rate=(birth rate+immigration) - (death rate+emigration)

Question 2

What factors affect population?

Answer 2

Disease, habitat size, food and water availability, male to female ratio, birth rate, death rate, immigration, emigration, predators.

Question 3

What are some factors that would cause an increase in population?

Answer 3

More food and water, less predators, bigger habitat, larger birth rate, immigration.

Question 4

What are some factors that would cause a decrease in population?

Answer 4

Less food and water, disease, more predators, smaller habitat, emigration, higher death rate.

Question 5

What is carrying capacity?

Answer 5

The maximum number of up individuals that a particular are can sustain.

Question 6

What happens when a population reaches carrying capacity?

Answer 6

It goes into a state of equilibrium, where the birth rate and death rate cancel each other out, and there is zero population growth.