At current (2007) rates of consumption, and given current estimates of known reserves, the predicted length of time to exhaustion of world oil supplies is about ____ years.
Fill in the blank(s) with the appropriate word(s).
Answer: 40
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Action potentials
a. can move up or down an axon, away from or towards the cell body. b. move in a one way direction towards the cell body . c. move in a one way direction away from the cell body. d. can jump from cell to cell. e. do none of these.
Carotenoids are important to many plants because these pigments are able to
A. store electrons for use during the "dark" reaction of photosynthesis. B. absorb water so that hydrolysis can be carried out in the chloroplasts. C. absorb wavelengths of light that neither chlorophyll a nor b can absorb. D. capture UV radiation that is harmful to the DNA in the nucleus of plant cells. E. remove carbon dioxide from the air.
community
What will be an ideal response?
Which of the following statements about the adrenal medulla is false? a. The fight-flight response involves the adrenal medulla
b. The adrenal medulla releases norepinephrine. c. The adrenal medulla releases epinephrine. d. The adrenal medulla contains specialized neurons of the parasympathetic division.