Answer:
Amino acid
Explanation:
Because Amino acids consist of an amino group (NH2) , carboxylic group (COOH) and radical (R).
The inner planets are made of rocks while the outer planets are composed of gas.
The inner planets are closer to Sun and are small in size while the outer planets are far away from sun and are larger in size
Answer:
The Circulatory System
Explanation:
When blood is rich in carbon dioxide it leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs. (All of which have to do with the circulatory system)
<span>All natural radiation is at a level low enough to be safe</span>
