Because, photoautotrophs serves as their carbon sources.
Chemoheterotrophic bacteria are those bacteria that are incapable of producing their own food, they depend on photoautotrophs, which are capable of making their own food by trapping energy from the sun. Thus, photoautotrophs serves as source of food for the chemoheterotrophic bacteria.
D. pressure from lava being pushed up from th earth adds new material to the ocean floor, creating a ridge
The literacy rate controls the growth of our country I think just kidding bi just want some points so I decided to answer your prob
