Question

the prefix that is added to the word autotroph to denote organisms which can use inorganic compounds in the environment to fix carbon dioxide with hydrogen atoms to make organic molecules is

Explanation:

Autotrophs are organisms that can produce their own food. When they use inorganic compounds to fix carbon - dioxide with hydrogen atoms to make organic molecules, they are called chemoautotrophs. The prefix "chemo -" is added to indicate the use of chemical energy from inorganic compounds.

Answer:

chemo -