According to the heterotroph hypothesis, the first life on Earth was able to:
A. synthesize its food from inorganic compounds.
B. feed upon its group species.
C. feed upon carbohydrates produced by autotrophs.
D. feed upon available nutrients in the environment.
E. carry on photosynthesis instead of respiration.
After the aggregates became so large, some developed the ability to ingest smaller organic molecules. This is heterotrophic nutrition. This set up competition as the seas became filled, so some developed the ability to change light energy into usable energy called glucose. This is autotrophic nutrition and according to the heterotroph hypothesis, autotrophic nutrition came after heterotrophic nutrition.