Cell wall, Central Vacuole, Chloroplasts.
I would say that the temperate zones though they do have areas such as the Pacific NW that have significant rainfall, but relative to the tropics are apparently relatively dry since they contain most of the world's deserts like the Sahara, the Sonora and the Gobi and the Atacama for example.
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I want to say it is the middle layer. But not 100% sure. Sorry if its wrong.
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Because the element carbon forms the backbone of the molecules that make up cells, one of the most important biogeochemical cycles to life on Earth is the carbon cycle. ... Carbon moves from living things back to the environment as all types of organisms use some of their food molecules as a source of energy.
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