Populations Unit test

A population is...

• A bunch of different type of organisms in one area

• A group of one type of organism

• All of the living an nonliving things in an area

• A large type of environment

The amount of organisms being born in a certain amount of time is the

• Birth Rate

• Death Rate

• Population Growth

• Population Decay

The amount of organisms dying in a certain amount of time is called the

• Birth Rate

• Death Rate

• Population Growth

• Population Decay

If the birth rate is higher than the death rate, the population will (a)   .

Disease causes

• Population growth

• Extreme population growth

• Population decrease by getting organisms sick

• Population decrease by eating organisms

If a disease is running through a population, the population won't all die out completely because some organisms in the population will have

• Stability

• An adaptation

• A mutation

• Immunity

(a)   is when animals move into a new area, and emigration is when animals move out of an area.

Why might an animal move out of an area?

• To go to place with more Resources

• To go to a place that has fresh air

• There was too little competition there

• To go somewhere cheaper to live

What are some resources animals might need in order to survive? Name 1.

How do natural disasters affect populations? Name 2 natural disasters.