Jatropha is a good source for biodiesel because
A. It is readily available worldwide
B. It's leaves are easily combustible
C. It grows in most climate zones
D. It's nuts have a high energy content
E. It will grow in sun or shade
Answer: D
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Class II MHC molecules do which if the following?
A) pick up dead antigens B) seek out antigen molecules that have been synthesized inside a virus infected cell C) both a and b D) neither a nor b
Why might coating a metal with another metal that is easier to oxidize prevent the first metal from being oxidized?
A. The metal that is acting as the coating is protected from moisture and oxygen. B. The metal that is coated is protected from moisture and oxygen so it doesn't react. C. It doesn't prevent it, but helps to slow it down. D. All of the oxidizing agent is consumed by reacting with the easily oxidized metal. E. all of the above
Dry growth of a hailstone occurs in an environment
A) where repeated trips are made through a cloud. B) where the temperature is well below freezing. C) with weak upper-level winds. D) where the temperature is near freezing.
Populations lacking any environmental resistance tend to increase by ________
A) pyramidal growth B) linear growth C) emigration D) exponential growth E) immigration