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The best representation is "C. A cactus is moved from a sunny windowsill to a dark room..", because the cactus feed itself with photosyntesis.
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The tilt of the earth changing would affect the distance to the sun. This, the radiation from the sun, and resulting temperatures, would change as well.
Answer:
trophic level
Explanation:
Each step of the food chain in the energy pyramid is called a trophic level.
