Methane is an important greenhouse gas whose levels in the atmosphere are also rising. This is because:
A. methane is generated by archaeons living
in the guts of cattle, and beef production is
increasing.
B. methane is generated by archaeons living
in waterlogged rice paddies, and rice
production is increasing.
C. methane is released when permafrost at
high latitudes melts, and more permafrost is
melting.
D. methane is generated by archaeons living
in the guts of cattle and in rice paddies, and
both beef and rice production are increasing.
E. All of the above.
E
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Broad-spectrum antibiotics inhibit the growth of most intestinal bacteria. Consequently, assuming that nothing is done to counter the reduction of intestinal bacteria, a hospital patient who is receiving broad-spectrum antibiotics is most likely to become _____.
A) unable to fix carbon dioxide B) antibiotic resistant C) unable to synthesize peptidoglycan D) deficient in certain vitamins and nutrients
Inbreeding will change ________
A) diet B) mating isolation mechanism C) species D) gene frequencies
True or False: Most human behaviors are a product of both nature and nurture, but this does not apply to neurologically simple organisms such as the fruit fly
A. true B. false
Which hormone(s) is(are) exclusively female?
a. FSH only b. LH only c. progesterone only d. FSH and progesterone only e. FSH, progesterone, and LH