Warm blooded animals living on land
Answer:
B
Explanation:
Kasi ito rin ung sinagutan ko
A substance that speeds up a chemical reaction—without being a reactant—is called a catalyst. The catalysts for biochemical reactions that happen in living organisms are called enzymes. Enzymes are usually proteins, though some ribonucleic acid (RNA) molecules act as enzymes too.
Enzymes perform the critical task of lowering a reaction's activation energy—that is, the amount of energy that must be put in for the reaction to begin. Enzymes work by binding to reactant molecules and holding them in such a way that the chemical bond-breaking and bond-forming processes take place more readily.
The movement of sperm, testicular fluids and secretions from the prostate gland and seminal vesicle into the urethra is know as emission
4 should be the answer. If not then i am sorry but it should be right.
