Answer:
True:
A heat source could be considered a source of pollution.
Explanation:
The reason behind this is that global warming is attributed to the general warming o the planet's temperature without making a specification of a single source or a singular type of origin. It just accounts for warming. One of the major discoveries of this problem was the fast-food chain's contribution to global warming. Saying that the fast-food industry provides a considerable amount of warming to the planet.
Natural selection is a type of evolution that allows organisms to adapt into the environment they're in for survival.
Answer:
the answer is A. Cellular respiration only
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It is unethical because it is using an unconscious host/body as testing device, which could potentially be inefficient.
Water waves are mechanical waves which light waves travel in rays and doesn’t depend on motion.