Answer: b
Explanation:
All the smaller molecules are made up of the organic elements
The sun--solar energy--is at the heart of the cycle of life, with all the sustenance relationships referred to as the food web. The sun is the ultimate source of energy for animals, but its energy must be harnessed by plants before it can be used by animals. Animals get energy by processing complex foods.
<span>comparisons of DNA and proteins</span>
