Select the two major functions of the estrogen and progesterone secreted by the human placenta.
Answer: 1. maintain the endometrium
2. prevent maturation of new ovarian follicles
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Which may be or is an RNA molecule?
A. AGCCTAC B. GGGCCCA C. GCCCUUA D. AGCCTAC AND GGGCCCA E. GGGCCCA AND GCCCUUA
Overstuffed adipose cells harm organs by ____
a. overfilling body cavities b. storing hazardous chemicals c. inducing a chronic inflammation response d. becoming cancer cells e. reducing oxygen flow
Philippe Bouchet and colleagues conducted a massive survey of marine molluscs on the west coast of New Caledonia. Twenty percent of the species found were represented by a single specimen. What does that suggest about the diversity of molluscs in this are
A) The west coast of New Caledonia is not an appropriate habitat for molluscs. B) They did not spend enough time sampling in the area. C) Many of the species from this 20 percent are probably rare. D) They were not sampling uniformly throughout the area. E) Many of the species from this 20 percent are most likely just dispersing through the area.
A(n) ____________________ is an enclosed coastal region where seawater mixes with nutrient-rich fresh water from
rivers and streams. Fill in the blank(s) with the appropriate word(s).