Four single bonds, 2- two single and one double bond, 3- one single and one triple bond, 4- two double bonds.
i think its energy that made by our body.. its form from a chemical substance (from food). The chemical energy in our body is the heat we give.
Heredity/Hereditary
<span>(the passing on of physical or mental characteristics genetically from one generation to another) Physical features mainly. </span>
Answer:
Explanation:
they can not chose to adapt. adaptations occur over a very long period time(darwinism) Evolution is not selective in the sense that the organism being changed can choose.
Answer:
The answer is Paleozoic Era
