In a food chain, grass absorbs sunlight to make sugar, the grass is eaten by a rabbit, and the rabbit is eaten by a fox.  What is a throughput that connects this system?

A. ATP
B. energy
C. sugar
D. the will to survive


Answer: B

Environmental & Atmospheric Sciences

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Which stage of the demographic transition cannot be found anywhere in the world today?

A) Stage 1 B) Stage 2 C) Stage 3 D) Stage 4

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Why is golden rice pale yellow in color?

a. Escaped fish are caught and removed from the ocean. b. The genetically modified fish are sterile. c. The fish are killed before they are old enough to reproduce. d. Fish are raised in individual isolation and are unable to interact with each other.

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The boundary between two air masses of different temperature and density is known as a

A. Warm front B. Cold front C. Front D. Jet stream E. Hadley cell

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The fall equinox in the Southern Hemisphere occurs on this date.

June 21 March 21 September 21 December 21

Environmental & Atmospheric Sciences