What percent of the world's land is used for crops and livestock pastures?
A. 73%
B. 13%
C. 17%
D. 37%
E. 7%
Answer: D
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In some immunocompromised patients, bacteremia caused by P. aeruginosa can invade and destroy the walls of subcutaneous blood vessels, resulting in the formation of cutaneous papules that become black and necrotic. This condition is known as:
a. nodular folliculitis b. ecthyma gangrenosum c. malignant otitis externa d. necrolytic migratory erythema
The portion of a flower that receives the pollen is the
A. ovary. B. anther. C. stigma. D. style. E. sepal.
The radioactive decay of 14C produces
a. carbon 12. b. carbon 13. c. more carbon 14. d. nitrogen 14. e. oxygen 14.
The process by which producers use light energy to make sugars from carbon dioxide and water is known as ________ .
a. photosynthesis b. respiration c. oxidation d. homeostasis e. hydrolysis