Answer:
The answer is A. a tissue
Explanation:
Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body.
its more than likely economy because economy is the study of goods,which includes resources
He association of two or more polypeptides in a multimeric protein is known as the <span>Quaternary structure.</span>
