biotic factors ( living )

Question 1

what are 4 biotic factors that can affect organisms in an environment?

Answer 1

availability of food, new pathogens, new predators and competition

Question 2

how does availability of food affect organisms in an environment?

Answer 2

if availability of food decreases, number of organisms fall

Question 3

how does a new predator arriving affect organisms in an environment?

Answer 3

can cause population of a prey species to fall
new predator can also affect existing predators if they are competing for same prey

Question 4

how does competition between species affect an environment?

Answer 4

if one species is better adapted to environment than another, then it will outcompete it until numbers of less adapted species is too low to breed

Question 5

how does new pathogens affect an environment?

Answer 5

if an infectious diseases emerges then spreads, it can wipe out population of species