Answer:
A covalent bond.
Explanation:
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.
The answer to this question is:
Light (sunlight), water, and carbon dioxide! Oh, and chloroplasts.
I Think The answer is b I hope it helps
Answer:
The main function of the circulatory (or cardiovascular) system is to deliver oxygen to the body tissues, whilst simultaneously removing carbon dioxide produced by metabolism.
