Free Points to anybody who needs it!

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

Which group of molecules are targeted by the kinases in order to control this movement