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Elanso [62]
3 years ago
13

What causes tree bark to become darker?

Biology
2 answers:
Andreyy893 years ago
8 0

Answer:

Coal burning released large amounts of smoke and smog into the surrounding environment; this left a layer of black soot on the once lighter-colored trees. sorry i put the explanation in the answer

klemol [59]3 years ago
3 0

Explanation:

Maybe how old the tree is? Like when it gets covered in dirt and stuff.

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