Sarah backstrokes at an average speed of 8 meters per second, how long will it take her to complete the race of 200 meters length?

not sure if this is what you'r looking for nnew= nold

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 : )

the answer to your question is tooth decay.

the correct answer is b