The sulfur cycle is similar to the cycle of
A. carbon.
B. oxygen.
C. nitrogen.
D. phosphorus.
C. nitrogen.
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What is not an adaptation to avoid overheating and desiccation? a. A barnacle trapping water inside with calcareous plates
b. A mussel closing its shell at high tide. c. A crab simply moving towards water. d. An anemone covering itself with shell fragments.
Valparaiso, Chile, is the city closest to Antarctica. With reduced CFC use, what health condition will probably change, and how?
A) There will be fewer skin cancers. B) There will be an increase in cataracts. C) There will be an increase in lung cancer. D) There will be fewer bacterial infections.
A(n) __________ has both biotic and abiotic components
a. population b. community c. ecosystem d. species e. genus
Which single physical feature is most often associated with a 47,XXX karyotype?
A. Infertility B. Large breasts C. Female pattern baldness D. Height greater than siblings