To maintain a balanced water cycle, what needs to occur?
a. irrigation for agriculture must stop
b. water withdrawals cannot exceed replenishment
c. per-capita consumption must decrease
d. per-capita consumption must increase
e. water withdrawals must exceed replenishment
Answer: b. water withdrawals cannot exceed replenishment
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Which of the following substances are NOT
reabsorbed by the kidneys?
a. most of the water b. amino acids c. glucose d. urea e. urea and amino acids
Transpiration occurs in:
a. the atmosphere. b. terrestrial plants. c. the ocean. d. groundwater. e. bacteria
If a patient was not having menstrual periods, medical intervention might bring about the shedding of the endometrium by
A) blocking release of FSH. B) blocking release of LH. C) blocking release of HCG. D) blocking release of estrogen and progesterone.
NPP is the difference between plant photosynthesis and respiration. Therefore, NPP quantifies the net absorption of what element(s) by living plants?
A. nitrogen B. oxygen C. carbon D. phosphorus E. nitrogen, phosphorus, and potassium