Why is golden rice pale yellow in color?
a. It is rich in chlorophyll a.
b. It is nutrient-poor.
c. It is rich in beta-carotene.
d. It is rich in chlorophyll b.
e. It is rich in phycobilins.
Answer: c. It is rich in beta-carotene.
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Which of the following describes the frequency of tornadoes in Canada?
A. most frequent in spring, least frequent in fall B. most frequent in summer, least frequent in fall C. most frequent in summer, least frequent in winter D. most frequent in spring, least frequent in winter
What enhances the ocean's buffering capacity?
a. The amount of dissolved inorganic carbon present b. The amount of acid already present in the ocean c. The amount of dissolved organic compounds d. The amount of calcium
Which of the following resources is nonrenewable?
A. Groundwater B. Trees in a forest C. Solar energy D. Oil E. Fish populations
What is entrainment?
A) warm, moist air fed into a thunderstorm by the updraft B) a line of thunderstorms, one feeding into the next C) the process of cool, dry air being pulled into a thunderstorm by the downdraft D) rotation from the parent cloud transferring into a tornado