18. Calculate the amount of energy transferred from the grass to the owl if there is also a rabbit and snake in the ecosystem and you started with 180.000 kcal of energy.
(DO NOT FORGET ABOUT UNITS!)
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180,000 kcal
1

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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