Changes in Population Size

Factors that affect population size:INCREASE: Number of ___________ & ____________ (Choose 2 answers)

• Birth

• Death

• Immigration

• Emigration

Does the graph represent an exponential growth or logistic growth?

• Exponential Growth

• Logistic Grwoth

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

Last year in a habitat of elephants, there were more births than normal and there was more immigration of elephants into the area. How does this affect population size and density?

• Both population size and density increase

• Both population size and density decrease

• The population size and density remain the same

• Population size decreases but the density increases

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

If the death rate is greater than the birth rate, the population will _____________.

• decrease

• increase

• stay the same

• go extinct

What occurs when organisms leave a population to join another one?

• immigration

• death

• birth rate

• emigration

What occurs when individuals move out of a population and into another one?

• immigration

• death

• birth rate

• emigration

What occurs when individuals move into a population from another population?

• immigration

• death

• birth rate

• emigration

Which country will have the most rapid population growth?

• Sweeden

• United States

• Mexico

• None

Tags

NGSS.MS-ESS3-4

The amount of births that occur within a certain time frame represents the __________.

• immigration

• birth rate

• emigration

• death rate

Tags

NGSS.MS-LS1-4