4.7.1.3 Biotic Factors

Question 1

What is a biotic factor?

Answer 1

• a living factor

Question 2

What are biotic factors which affect a community?

Answer 2

• availability of food
• new predators arriving
• new pathogens
• community

Question 3

How can food availability affect a community?

Answer 3

• more food means more successful breeding
• increase in population

Question 4

How can new predators affect a community?

Answer 4

• more species killed
• decrease in population

Question 5

How can new pathogens affect a community?

Answer 5

• population has no resistance to new pathogen
• decrease in population

Question 6

How can competition affect a community?

Answer 6

• if one species is better adapted, it will outcompete it until numbers of lesser adapted species are insufficient to breed
• decrease in population