Which of the following enviornmental changes is most difficult to survive?

The answer is:

Transition from a meadow to a forest.

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the answer is otpion c) understanding

he wants to be heard one more time. he wants to be understood. he needs the truth one more 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 : )