What phrase best describes a community?

a. the different types of predators in an area
b. the various species of plants in an area
c. all populations of organisms living in an area,

The correct answer is -

C. all populations of organisms living in an area.

Explanation:

Community can be described as interacting group of populations belonging to different species, inhabiting any particular location.

For instance, a forest of trees and growing plants, which is also inhabited by different animals and microbial population forms biological community of that area.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added