Answer:
The cells of living things are made mainly of four elements: carbon, hydrogen, oxygen and nitrogen. They make up 96% of the atoms that are in living things, so they would be considered major chemicals. However, depending on how you define major, other elements that only make up a few percent of cells can top the list.
Explanation:
<span>I think the correct answer among the choices listed above is option C. The organism described most likely is a starfish. This is because annelids and mollusks exhibit spiral holoblastic cleavage while the echinoderms have radial holoblastic cleavage.</span>
Answer:
Weightlifting is not a natural action by animals, it makes people stronger than they should normally be based on their genetics. So this does not follow natural selection because someone who was born "stronger" can be weaker than someone who lifts weights.
Explanation:
