Question 20 Review Which event is the best example of erosion? 1. breaking apart of shale as a result of water freezing in a crack
2. dissolving of rock particles on a limestone gravestone by acid flin They 3. the deepening of a stream bed by pebbles rolling along the bottom of the stream
4. crumbling of bedrock in one area to form soil​

i'm sorry, but can you list the answers? i cannot with something i don't know the answers to

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chris

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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