What is the effect of the angle of the Sun on the insolation an area receives?

The sun angle at a place varies over the course of the year as a result of the constant tilt and parallelism of the earth's axis. As the sun angle decreases, light is spread over a larger area and decreases in intensity (energy input per unit area)

Explanation:

this protocol provides a detailed procedure for nucleoprotein extraction from cultured cells and tissues in an efficient manner.

the animal that would be cutest if scaled down to the size of a cat? elephant