Population dynamics

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 years it takes a population to double in size based on its current growth rate

• death rate
• mortality rate
• birth rate
• doubling time with exponential growth

Which is NOT a reason for the decreasing death rate?

• Better health care
• Greater food supply
• Cleaner water
• More pollution

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.

Why would advances in medicine lead to population growth?

• Curing and treating deadly diseases allows people to live longer

• People are unable to have babies without medical help

• Babies do not grow if they don't take their medicine

• New drugs allow mothers to have multiple births, like octuplets

Before 1800, the infant mortality rate was much higher than it is now. What does that mean?

• People didn't have a lot of babies before 1800

• Children did not grow very tall before 1800

• Most women were unable to have babies before 1800

• A lot more babies died during childhood before 1800

At what population was carrying capacity met?

• 250

• 1000

• 400

• 720

Exponential population growth can be described as

• growth when resources are limited

• a j-shaped curve

• a s-shaped curve

• growth that reaches carrying capacity

Logistic population growth can be described as

• growth when resources are limited

• a s-shaped curve

• reaching carrying capacity

• all of the above

What limits Population Growth?

• birth rates increasing

• resources being used up

• natural selection taking place

• none of the above