Answer:
Rabbits are adapted to a certain type of environment and conditions, not certainly winter. So this effect the survival rate of the rabbits.
Moreover, their diet intake may be affected, for example, they are herbivores, so the plants they consume might not be present in this harsh season.
Then, competition with other animals increases as well, so the rabbits might have more predators.
Genetic structure, which is inherited by the parents.
A child's eye and hair color are determined by its parents that pass on the genes for red, blonde, brown, black, curly, straight hair, etc, etc.
Hope this helped!!
I believe Energy absorbing reactions are endergonic.
Assuming that you're talking about a food pyramid in the ecosystem,
the best explanation for the decrease in the amount of energy transferred to each succeeding level is that much of energy is : released as heat
Hope this helps