Question

what is the source of all energy on earth?
the sun
plants
hydro
wind
rewatch

Explanation:

The sun is the primary source of energy on Earth. Plants get energy from the sun (photosynthesis), hydro energy comes from water cycles driven by solar heat, and wind energy is due to solar - heated air movement. So the sun is the ultimate source.

Answer:

the sun (the option with "the sun" as its text)