Question

Density-dependent factors ________.a. include the effects of a hard freeze on a single species within a communityb. include the effects of a hard freeze on an entire communityc. cause decreases in the number of species in an ecosystemd. include the effects of disease, predators and food on a single species within a communitye. include the effects of rainfall on an entire community

Answer 1

D

Step-by-step explanation:

d. include the effects of disease, predators and food on a single species within a community

Answer 2

d. include the effects of disease, predators and food on a single species within a community

Step-by-step explanation:

So-called density-dependent factors are those that prevent excessive population growth due to the large number of individuals in a given population: disputes over space, food, sexual partner eventually lead to decreased reproductive rate and increased mortality. Density-dependent factors may also be considered to be the effects of disease, predators and food on a single species within a community.