A(n) microscope uses a magnetic field to focus a beam of electrons on or through an object whose image is being magnified.

Electron

Explanation:

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.

i hope this : )

golgi body just took the test on edge