The impact of a large meteorite with Earth would have most likely caused mass extinctions by
A. causing a great prolonged rise in the earth's temperature and destroying plant life.
B. creating large clouds of dust that blocked out sunlight only.
C. causing a great prolonged rise in the earth's temperature only.
D. creating large clouds of dust that blocked out sunlight and destroying plant life.
E. destroying plant life on Earth only.
D. creating large clouds of dust that blocked out sunlight and destroying plant life.
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NADP+ gets its electrons to become NADPH
in the light-dependent reactions of photosynthesis from
a. ATP synthase b. the flow of hydrogen ions c. electron transfer chains d. oxygen gas e. glucose
An interruption in the normal breathing cycle at night is classified as ____________________. Fill in the blank(s) with the appropriate word(s)
The relationship between the fungi and algae in lichens is best described as
A. a possible controlled parasitism wherein the fungi withdraw food from the algae and the algae do not benefit from the association. B. a possible controlled parasitism wherein the algae are moistened and protected by the fungi, but the fungi do not benefit from the association. C. a simple cooperative mutualism between normally free-living strains. D. an endosymbiotic transfer of the chloroplasts of algae to the hyphae cells. E. a complete mixing of the genomes of the two groups at the cellular level.
Humans exert top-down pressures on white-tail deer.
Answer the following statement true (T) or false (F)