Answer:
Snow line
Explanation:
The lowest elevation at which layer of a permanent snow occurs in the summer is known as the snow line.
Snow line is defined as the boundary between a snow covered area and a snow free one.
The lowest level connotes with the level of snow during the summer because the temperature is warm at this period in time. Below this level, all the glaciers are frozen and will not melt in any way.
During winter, the snow line can rise due to drop in temperature.
Well, where you are effects the climate because there are different weather patterns in each region. For example, the mountains get colder in the winter because they have a higher altitude, therefore, geography plays a part.
The answer is; endoskeleton
An endoskeleton allows for smooth and steady growth unlike in an invertebrate with an exoskeleton that needs to shed their skeleton during irregular growth spurts. An endoskeleton is significant for leveraging (like an anchor) skeletal muscles hence enabling the animals to grow big and is able to support their own weight.