I think C I did some research that one made more sense then all of them I’m not sure tell me if I’m wrong
Controlled group does not change
686.8 j is needed to burn 4.24 grans of pd.
An autotroph is an organism that can produce it's own food. For example, a plant is an autotroph, as it uses photosynthesis to produce is food. There are also some autotrophs that are not plants, so don't get confused between the two!
