I would say oxygen because respiration is breathing mechanically.
Answer:
cheap energy
i did the quiz and got it right
The answer would be C because people destroying rain forests for homes and resources are diminishing animal homes and animal population <span />
Answer:
<em>TO Determine whether Organic or not Just take some crystals on the end of a spatula and then introduce it in a flame, if it is melts or burns without white vapors then it is an inorganic compound and if you see white vapors or smoky vapors, it is organic. This is a very basic test which is used for this purpose.</em>
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<em>idk the second one..</em>
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Explanation:
A negative feedback system has three basic components: a sensor, control center and an effector
