Compare and contrast autotrophs and heterotrophs

Compare: They are both living organisms.

contrast: Autotrophs make their own food. But heterotrophs can not make their own food.

Both life forms that require energy from food to sustain life Autotrophs make their own food by synthesizing in the form of photosynthesis (using the sun) and chemosynthesis (using chemicals in the environment around the life form) Heterotrophs rely on other organisms to get food (eating plants, animals, or bacteria) Also use this (I didn't make it but it is useful) https://quizlet.com/15310050/similarities-and-differences-between-autotrophs-and-heterotprohs-flash-cards/

Umm. I think a ( the amount of lean muscle in a body).

I think only my this answers. 

I hope you can help with that. 
Thank you~:

Maybe I got wrong this answers: