Answer:
At the beginning of the follicular phase, the lining of the uterus (endometrium) is thick with fluids and nutrients designed to nourish an embryo. If no egg has been fertilized, estrogen and progesterone levels are low. As a result, the top layers of the endometrium are shed, and menstrual bleeding occurs.
Explanation:
Answer:
OD
Explanation:
Scientists have conducted experiments that show that smoking damages lungs, and causes lung cancer.
Kool if you know what I mean
Cell wall and chloroplast
Answer:
slow flowing areas usually have warm waters
slow-flowing areas usually support a lot of plant life.
Explanation:
thats the answer
