2.1

Question 1

What are some abiotic factors for a population?

Answer 1

Sunlight, temperature, precipitation, and soil nutrients.

Question 2

What are some biotic factors for a population?

Answer 2

The competitors, the prey, and the predators.

Question 3

What is population density?

Answer 3

The amount of organisms in a given quantity of area

Question 4

What is a population?

Answer 4

A group of individuals of same species in same area in same time.

Question 5

What is the equation for the mark and recapture method?

Answer 5

Total marked over total organisms equals recaptured with marks over total recaptured.

Question 6

What are the ways to count population?

Answer 6

Direct count, indirect count, random sampling, and mark and recapture

Question 7

Explain the process of random sampling.

Answer 7

You divide the area into a grid and count the population in a few of the boxes. You find a density for those and apply it to the whole area.

Question 8

Bob catches and marks 20 fish in his lake. He comes back the next day and catches 40 fish, of which 10 were marked. What is the estimated population?

Answer 8

80

Question 9

What are the 3 types of population distribution and how can you tell them apart?

Answer 9

Uniform - creates a pattern that is equally spread apart
Clumped - in large groups or clumps
Random - No pattern and is completely randomized

Question 10

What is population distribution?

Answer 10

Where the organisms are in an area. There may be a lot of organisms in a specific area due to a good source of food, or vice versa.