Amphibia i think it is ... i hope this helps
Answer:
C. The brain controls the contraction of muscles.
Explanation:
Calcium's positive molecule is important to the transmission of nerve impulses to the muscle fiber via its neurotransmitters triggering release at the junction between the nerves. Inside the muscle, calcium facilitates the interaction between actin and myosin during contraction.
The whit blood cell also called leukoctye or white corpuscle is capable of motility and defends the body against infection and diseases by ingesting foreign materials it also has a nucleus
Answer: each water molecule attracts other water molecules because of the opposite charges between them, forming hydrogen bonds
As the air inside a balloon decreases, its volume (amount of space occupied by the object) decreases, meaning the balloon gets smaller.
