What causes darkening of the skin as melanin production increases

What is the problem in this article? what solution does the article propose?

Ture or false evidence for evolution includes millions of fossils

(6.02 mc)what affect do marine protected areas have on environmental quality? they increase environmental quality by preventing resource overuse. they increase environmental quality by adding new species. they decrease environmental quality by removing all human activity. they decrease environmental quality by adding recycling facilities.