In an ecosystem, the average temperature increases, causing a shorter winter. There are two varieties of rabbits in this area, white-furred rabbits and brown-furred rabbits. Which scenario is most likely?

Question

1. The proportion of white-furred rabbits in the population declines.
2. Both white- and brown-furred rabbits decline.
3. Both white- and brown-furred rabbits increase.
4. The proportion of white-furred rabbits in the population increases.

Answer 1

The scenario that is most likely to occur in response to rising temperatures and shorter winters is:

1. The proportion of white-furred rabbits in the population declines.

As the average temperature increases and winter becomes shorter, the advantages that white-furred rabbits have during snowy seasons (where their camouflage helps protect them from predators) may diminish. In this warmer environment, brown-furred rabbits may have a better chance of survival and reproduction, leading to a decline in the proportion of white-furred rabbits in the population.