EASY. Plz answer quickly I will mark brainliest. The battery can be connected to a bell to produce sound. Which statement best explains why there are two metal posts on the battery?

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

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 : )