Help pls ??!!!.. it’s due tonight

Answer 1:

This is an example of successful adaptive mutation. Adaptive mutations actually happen because of high levels of stress in the organism's environment caused by the same stressor/s. Here, lots of rabbits being excessively cold all the time due to environment changes caused a lot of extra stress and over time, they successfully mutated to adapt to their environment.

Answer 2:

The answer should be the 4th one. A mutation that doesn't work doesn't always fully go away, but it will become much less common.

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