Answer:
The nights are shorter.
Explanation:
Summer normally begins on June 21 and ends on September 20 in the northern hemisphere. This season is characterized by the higher temperatures of the year than sloping, and in which both animals and plants are more active. Summer is characterized by the days being longer than the nights.
An animal that is healthier will have a better chance of survival due to better strength, and also be better suited to winning a mate. Animals that are weak or sick are most likely to die off or be killed by a predator or natural reasons, if this animal survives, it will most likely not get a mate because the mate will not be attracted to the sickened animal, considering how most animals search for a healthy mate to reproduce with. (Usually there is some type of court ship dance or song of some sort, and it is usually the more healthy animal that is able to "perform" the best dance/song for the mate it is trying to win over) Hope that this helped!
No because X and Y do not have D-cell
protein synthesis Hope this helps!!