Which of the following conditions is NOT normally found at tropical latitudes?
a) High precipitation
b) Low precipitation
c) Hot temperatures
d) A diverse plant community
Ans: b) Low precipitation
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What is one of the primary reasons given for why there are very few fossils from the earliest (pre-Ediacaran fauna) animals?
A. The area covered by land, where early animals lived, was small so there were fewer opportunities for sedimentary rocks to form fossils. B. The area covered with water was much smaller than present day, so there were fewer places for fossilization to occur on the ocean floor. C. The earliest animals were soft-bodied and did not have requisite body parts that could be fossilized through mineralization. D. The earliest animals were distributed in high-oxygen environments, and decomposition occurred too rapidly for fossilization to occur.
Active immunization of a population will raise the general level of herd immunity.
Answer the following statement true (T) or false (F)
Which of the following is false regarding agerelated
macular degeneration? a. It results in progressive destruction of photoreceptors in the fovea and surrounding region. b. It clouds the center of the visual field. c. It has no genetic basis. d. Smoking, high blood pressure, and obesity increase its risk. e. It cannot be cured, but its progression can be slowed.
________ is a biochemical technique that allows one to separate biological molecules based on size, shape, and/or affinity for specific molecules or functional groups
Fill in the blank with correct word.