Chemical reactions may ______ energy.
a. absorb
b. release
c. require
d. all of the above
Answer: d. all of the above
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Greenhouse gases include ____
a. carbon dioxide, water, nitrogen, and hydrogen b. carbon dioxide, water, methane, ozone, and nitrous oxide c. carbon dioxide, phosphorous, water, and ozone d. carbon dioxide, methane, and carbon monoxide e. carbon dioxide, ozone, nitrous oxide, and phosphorous
Ancestors of giraffes with shorter necks could not reach branches high up in trees for food. This led to selection for longer-necked giraffes.
A. disruptive B. sexual C. artificial D. directional E. stabilizing
A broad land or ocean region defined by climate,
geography, and producers is called a. an ecoregion. b. a hot spot. c. a realm. d. a habitat island. e. the biosphere.
The use of sulfate as a terminal electron acceptor by Desulfovibrio is an example of assimilatory sulfate reduction.
Answer the following statement true (T) or false (F)