Question

What are bacteria that can produce their own food without using the sun's energy called?

Answer 1

Chemoautotrophic

Explanation:

This word ("chemoautotrophic") consists of two primary concepts in science. One, is chemosynthesis. The organisms that live in the trenches of the ocean do not get proper sunlight to gain energy. Instead, they do chemosynthesis which is the conversion of one or several amounts of carbon molecules (such as `CO_2` or methane) into organic molecules (e.g hydrogen gas).

The other is autotrophic organisms. Autotrophic organisms create their own food (producers), unlike heterotrophic organisms (consumers).

Therefore, you get the word "Chemoautotrophic".