Answer:
I think the answer is A) biological species concept
Answer:
Maybe this helps! Atoms come together to form molecules because of their electrons. Electrons can join (or bond) atoms together in two main ways. When two atoms share electrons between them, they are locked together (bonded) by that sharing. These are called covalent bonds.
Answer:
A.) food digestion. Smooth muscle and striated muscle are able to contract.
Explanation:
Unlike striated muscle, smooth muscle contracts slowly and automatically. Musculature of internal organs and the digestive system consists of smooth muscles. Therefore, they are involved in food digestion.
