All of the following are sources of environmental damage in desert biomes except:a
people driving across the desert in four-wheel drive vehicles
b. poaching
c. irrigation of desert soils
d. increased groundwater consumption by desert cities
e. aquifer buildup
E
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Which muscles contract during a restful expiration?
(a) external intercostals. (b) diaphragm. (c) abdominal. (d) both b and c.
Which of the following function: location relationship is INCORRECT?
A. acetyl CoA formation; cytosol B. citric acid cycle; mitochondria matrix C. oxidative phosphorylation; mitochondria inner membrane D. glycolysis; cytosol E. electron transport chain and ATP synthase; mitochondria inner membrane
Restriction enzymes have proved so useful in manipulating DNA because
A. they cut at defined sites. B. the sticky ends make it very easy to allow recombination of any type of DNA. C. they protect eukaryotes against virus attack. D. they cut RNA molecules. E. they cut at defined sites AND the sticky ends make it very easy to allow recombination of any type of DNA.
Why do many non-native species, such as a prickly pear cactus brought to Australia from South America, rapidly become abundant when first introduced?
A) Non-native species increase their reproductive rate when introduced. B) The climate in the new site is more favorable than in its native site. C) The carrying capacity at the new site is higher than that at the native site. D) There are fewer predators and parasites capable of attacking the non-native species in the new site. E) Growth changes from an S-curve to a J-curve at the new site.