Fact 1: Webbed feet are used for moving faster through water by aquatic animals.

Fact 2: Aquatic animals moving through water are also subject to the principles of aerodynamics.

Given the two facts above, answer the question "Aquatic animals in water use webbed feet due to what?" with the following options: 
- ability to sense light
 - principals of aerodynamics
 - kinetic energy
 - swimming slower
 - refraction of light
 - poor swiming
 - bending light rays
 - dynamic relationships


 

  principals of aerodynamics       