An olympic runner prepares to run a 100 meter race. which of the body systems listed will probably be least involved in the 100 meter race? a) circulatory b) muscular c) reproductive d) skeletal

satellites are frequently used to make observations of the orbit on earth

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 : )