You are presented with the question "in evolution, what changes in living things over time?" and the following answer choices: 
- traits
 - gravity
 - oxygen
 - mammals
 - h2o
 - alleles
 - animals
 - insects

Now knowing that evolution is a change in the characteristics of living things over time and characteristics include traits like shape, color, size, and texture, choose the best answer.


 

 traits        