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Answer:
The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution. ... Later, when pollution was reduced, the light-coloured form again predominated.
That it has higher value than other things being sold.
From what i understand of the question, its water? Im not sure exactly what the question is asking, sorry :/
Answer:
Once common throughout Africa and Asia, elephant numbers fell dramatically in the 19th and 20th centuries, largely due to the ivory trade and habitat loss.
Explanation:
Hope this can help u dear