The diagram below shows different layers of sedimentary rocks.

Based on the diagram which of these inferences is most likely correct?

A. Layer b is older than layer g

B. Layer f is older than layer d

C. Layer a and layer b were formed at the same time

D. Layer d and layer c were formed at the same time

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 : )

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project