In the body of a human or other complex organism, a group of similar cells performing similar functions is called a/an
a. organ.
c. organ system.
b. tissue.
d. cell.

Which statement is true for bacteria a. bacteria have complex internal structures b. all bacteria are spiral in shape c. all bacteria cause disease in animals d. bacteria break down some foods

Which of the following are responsible for sending messages from the hypothalamus to the thalamus?

Which organism in this food web is an omnivore?coati