The answer is
1) Valves between atria and ventricles close, 2) first heart sound heard, 3) valves between ventricles and body close, 4) second heart sound heard
Answer: I think itssss Optical Microscope!!!
Explanation: Also called the light microscope
Answer:
G3P, thats the answer you're looking for
Explanation:
A lot of the enzymes activity is told by told by it's shape