Population Growth

what tells how fast a given population grows?

• exponential growth model

• population growth rate

• logistic growth model

• carrying capacity

The term ecologists use to describe the number of individuals moving away from a population is

• Emigration

• Immigration

The term ecologists use to describe the number of individuals moving into a population is

• Emigration

• Immigration

What is a population ?

• Disturbance has removed vegetation but left soil intact.

• The natural birth, growth and development of ecosystem.

• All organisms of a species that live in the same area.

• A community of interacting organisms and their environment.

If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population?

• It will increase.

• It will decrease.

• It will stay the same.

• It will fluctuate.

 

The number of births compared to the total number of people in a population

• death rate

• birth rate

• baby boom

• doubling time

If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?

• It will increase.

• It will decrease.

• It will stay the same.

• It will fluctuate.

A small island nation is tracking its total population.  It started with exactly 100 people. During the year, 10 people immigrated, while 20 emigrated.  The birth rate was 15, and the death rate was 5.  What is the new population of the country?

• 115

• 110

• 90

• No change; the population is still 100.

One of the Factors that affect population size:

INCREASE: Number of ___________

• Birth

• Death

• Emigration

• None of them

One of the factors Factors that affect population size:

DECREASE: Number of ___________

• Birth

• Emigration

• Immigration

• None of them