Explain how sunlight is the primary source of energy for your own life.

The sun provides the energy for plants which starts the whole food chain. 

the human body has to remain a certain temperature. 
The sun provides that heat. 

I have to drink. 
The sun evaporates water so it can be redistributed in the form of rain. 

Your life is set by the movement of the sun.

 It provides vitamin D

Hope this helps