Select all that apply. a) Medications containing vitamin A are sometimes used to treat acne, but can cause serious side effects. b) If a meal contains 1200 mcg beta-carotene, it has 100 mcg RAE. Night blindness and increased infections are early signs of vitamin A deficiency. c) Excessive intake of orange fruits and vegetables is likely to lead to vitamin A toxicity. d) An adult female receiving 700 IU of vitamin A daily would meet her needs for that day.

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the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying

weathering is the answer.

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.

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