Unit 3

Question 1

What is an niche

Answer 1

the role an organism plays in a community.

Question 2

Explain why competition in ecosystems occurs.

Answer 2

When there is a lack of resources/food

Question 3

What is Intraspecific competition

Answer 3

Intraspecific competition is an interaction in population ecology, whereby members of the same species compete for limited resources.

Question 4

What is INTERSPECIFIC competition

Answer 4

is competition for a resource between members of
DIFFERENT species.

Question 5

What is biodiversity?

Answer 5

the variety of life in the world or in a particular habitat or ecosystem.

Question 6

What is a biotic factor?

Answer 6

Factors that relate to living organisms in the habitat

Question 7

What is an abiotic factor?

Answer 7

Factors that relate to non living parts of the habitat

Question 8

What is a food chain

Answer 8

a series of organisms which depend on each other for food (energy)

Question 9

What are Human influences?

Answer 9

Things that humans do to affect the biodiversity in the habitat

Question 10

How much energy is transferred in this food chain

Answer 10

10%( 90% is lost)