There are many organs and glands of the endocrine system, but which one is the master controller?
A. The hypothalamus
B. The thyroid
C. The pituitary
D. The pancreas
Answer: A
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The effects of elevated atmospheric CO2 concentrations
A. have the potential to alter the nutritional status of plants. B. have the potential to allow herbivores to eat less plant matter. C. have no effect on nutrient levels found in plant leaves. D. allow the plant to use O2 more efficiently in photosynthesis. E. cause an increase in rubisco production.
In liverworts, when are the pores (not true stomata) open?
a. daytime b. nighttime c. they do not close d. they are never open
An animal is a(n) _____. (choose all that apply)
a. organism e. consumer b. domain f. producer c. species g. hypothesis d. eukaryote h. trait
The soil-forming process that occurs naturally in desert basins and along the coast and is a problem in agricultural areas where irrigation is practiced is
A) calcification. B) gleization. C) laterization. D) salinization.