The burning of fossil fuels produces carbon dioxide. what effect could a higher concentration of carbon dioxide in the atmosphere have on photosynthesis?
a.
it will have no effect on the rates of photosynthesis.
b.
photosynthesis rates will likely increase.
c.
photosynthesis will no longer occur during the summer months.
d.
photosynthesis rates will likely decrease.
Answers: 2
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Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above
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Theories basic to all of the life sciences include the germ theory of disease. theory of evolution by natural selection. o two of these answers are correct none of these answers are correct o cell theory.
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Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
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The burning of fossil fuels produces carbon dioxide. what effect could a higher concentration of car...
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