Melanin provides pigmentation to the skin and it also provides UV ray protection (which is its role in the epidermis).
Global warming is the answer
Answer:
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere
Explanation:
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The answer is HCl (hydrochloric acid) and NaOH (sodium hydroxide) will react to NaCl (sodium chloride) and water.