What is solar thermal energy used to do- heat homes or power homes?

I think it's heat homes. Thermal means heat, and solar is basically energy.

This is what i found on google “phytoplankton, tiny organisms that live in the ocean, are autotrophs. some types of bacteria are autotrophs. most autotrophs use a process called photosynthesis to make their food.” i hope this you for what your looking for

It would be a rusting car, for sure