You are presented with the question "Mammals are " and the following answer choices: 
- animal transport
 - Heterotrophs
 - parasites
 - fur and fat
 - animals
 - pathogens
 - producers
 - more abundant

Now knowing that heterotrophs are living things that cannot make their own food and mammals depend on the vegetation for food and shelter, choose the best answer.


 

  Heterotrophs       