Answer:
The right answer is D
Explanation:
They use carbon dioxide, water and sunlight to make carbohydrates. And the oxygen is just a byproduct. No real organic molecules are needed before.
A skeleton is the hard structure that protects the internal organs of a living thing.
Explanation:
The skeletal system is an organ system that serves as the framework of the body of an organism.
Bacterial genes are organized into operons, clusters of coregulated genes, that are regulated such that they are all turned on or off together.
