Demographics Review

Question 1

What are four things we measure to determine population growth?

Answer 1

1. Immigration
2. Emmigration
3. Birthrate
4. Deathrate

Question 2

What is the difference between immigration and emmigration?

Answer 2

Immigration = moving into a geographical area and emmigration = moving out.

Question 3

Name the five limiting factors in a population.

Answer 3

1. Predation
2. Parasites & Diseases
3. Competition
4. Unusual Weather
5. Natural Disasters

Question 4

What is the difference between a density-dependent and density-independent limiting factor?

Answer 4

A density-dependent limiting factor is more of an issue as a population grows and gets bigger, but a density-independent limiting factor will damage regardless of the size of the population.

Question 5

What are the three density-dependent limiting factors?

Answer 5

1. Predation
2. Parasites/Diseases
3. Competition

Question 6

What are the two density-independent limiting factors?

Answer 6

1. Unusual Weather

2. Natural Disasters

Question 7

What is exponential population growth?

Answer 7

It is a curved graph with an increasing slope and it happens when limiting factors aren’t present.