The impact of a large meteorite with Earth would have most likely caused mass extinctions by
A. creating large clouds of dust that blocked out sunlight and destroying plant life.
B. causing a great prolonged rise in the earth's temperature and destroying plant life.
C. destroying plant life on Earth.
D. creating large clouds of dust that blocked out sunlight.
A. creating large clouds of dust that blocked out sunlight and destroying plant life.
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Which of these groups is least closely related to the
other four? a. green algae b. red algae c. brown algae d. plants e. all of the above are equally closely related
Free nerve endings detect all of the following EXCEPT
a. touch. b. pressure. c. heat. d. pain. e. light.
Which of the following best describes the hypoglycemic effect of insulin?
A) Insulin allows entry of glucose into most body cells. B) Insulin encourages catabolism of glycogen into glucose. C) Insulin encourages synthesis of glucose from lactic acid and noncarbohydrate molecules. D) Insulin encourages release of glucose into the blood by liver cells.
Which of the following rows is a correct match?
A. Row 1
B. Row 2
C. Row 3
D. Row 4