Which phase of the female reproductive cycle is characterized by thickening of the endometrium and presence of one dominant graafian follicle? choose one answer.
a. menstrual phase
b. preovulatory phase
c. ovulation
d. postovulatory phase

Describe how a student should adjust the microscope to see the cells on a slide more clearly?

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed

What are levels of ecology and how can we remember them