An atom is the smallest unit of matter, and contains three parts: the proton, the neutron, and the electron. A molecule is a group of atoms bonded together.
Explanation:
Answer from: Quest
biology is the study of life. it is the study of living organism.
Answer from: Quest
the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.
Ialready know the answers to these questions and they are on the attachment. but i just need to know why that answer is the correct one. plz asap! this is for a report that i need to email by 10!