They have specialized legs, skin, feet, eyes, and bodies thats why they primarily live in water but can live on land as well <span />
Answer:
An ecosystem is a community of living organisms with nonliving components of their environment, interacting together as a system
Explanation:
I vivid description of an ecosystem is that species of different kinds make up populations which makes up communities.
Please write out the problem you are specifying <span />
<span>C. metric ruler since millimeters are metric</span>
