Fact 1: Chloroplasts contain the green pigment chlorophyll.

Fact 2: Animals lack chloroplasts.

Given the two facts above, answer the question "What do animals lack?" with the following options: 
- skin
 - blood
 - sensory neurons
 - fur and fat
 - Bodily water
 - oxygen
 - chlorophyll
 - Chemical energy


 

       chlorophyll  