Green beetles came to outnumber red ones in the bush because:
ACrows could not reach them
BCrows would not touch them
CCrows had left the area
DCrows could not see them
Answer & Solution
Correct answer: D. Crows could not see them
1. Crows ate the beetles they could see on the green bushes.
2. The progeny of green beetles was not eaten while red ones continued to be eaten.
3. So green beetles increased in the population, a case of natural selection.
_Source: NCERT Class 10 Science, Ch 9 'Heredity and Evolution'_
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