Answer: Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
Explanation:
“No man is an island.”This saying is also true for organisms in an ecosystem. No organism exists in isolation. Individual organisms live together in an ecosystem and depend on one another. In fact, they have many different types of interactions with each other, and many of these interactions are critical for their survival.
I think it’s B I’m not for sure
The two substances needed in this situation are:
potato extract and catechol<span />
Answer:
Flat strip of a land,raised bank ,or terrace bordering a river or canal
Explanation:
A path or grass strip beside a road
