Answer:
A system for growing food without using much land
Explanation:
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Answer:
Water pollution
Explanation:
Polluted water can lead to crops dying and dehydrated, leading to desertification.
Answer:
Darwin's finches are a classic example of an adaptive radiation. Their common ancestor arrived on the Galapagos about two million years ago. During the time that has passed the Darwin's finches have evolved into 15 recognized species differing in body size, beak shape, song and feeding behavior.