Which of these is changed by the Milankovitch cycles?

A) the reflectivity of Earth

B) the amount of solar energy that reaches Earth

C) the length of a year on Earth

D) the duration of seasons on Earth

The amount of solar energy that reaches Earth is changed by Milankovitch cycles.

Explanation:

Milankovitch cycles occur due to slight changes in the orbit of the Earth around the Sun. These could be changes in its eccentricity or even tilt in the axis. These cycles caused due to small changes have different effects on how much solar energy reaches the Earth and the time at which maximum sunlight is received. These cycles are very important as the amount of solar energy or sunlight reaching the Earth also affects the climate on the Earth. The ice ages are examples of such changes in the climate. They are strongly connected to the changes in the orbit of the Earth.