Where does energy come from that fuels our physical activity

The energy that fuels the processes inside our bodies and everything we do with our bodies comes from chemical energy stored in what we eat.

But that only raises another question:  Where does the chemical energy in our food come from ?

If you follow it back far enough, eventually it ALL comes from the sun.

i don't understand is there any other way you can rephrase it plz let me know in the comments and i will do it.

explanation:

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards