Will our modern forests eventually become coal? What will be an ideal response?
ANSWER: While it is impossible to predict the future, the answer would be, not likely. The primary
event that turned the ancient forests to coal was the relatively rapid rising and falling of the
seas, leading to layer after layer of decayed tree matter pressed in the sediment. The current
climate of the Earth is not experiencing this, and thus our current forests will likely decay
into non-coal organic matter.
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The Nernst Equation is: __ = 60 mV log10 ([Xextracellular/Xintracellular]). What should fill in the blank here to complete this equation?
A. the equilibrium potential B. the membrane potential C. the action potential D. resting potential E. refractory potential
Humans are responsible for more than 75 percent of all present-day extinctions since A.D. 1600
Indicate whether the statement is true or false
A major fully reduced form of carbon, important in biogeochemical cycling is ________.
A. methane B. hydrogen sulfide C. carbon dioxide D. carbohydrate
The common term for the action of transferring pollen grains from an anther onto a stigma is:
a. pollination. b. fertilization. c. reproduction. d. intercourse. e. None of the above is correct.