What can you infer about an ecosystem that depends on chemoautotrophs for food?

Chemoautotrophs made their food by themselves using the energy from the sun. This means that an ecosystem that depends on chemoautotrophs for food is DEPENDENT ON SUNLIGHT FOR FOOD AND SURVIVAL. This is because the chemoautotrophic organisms are the primary producers in that ecosystem.

1.989×10^30 kg is the weight of the sun.