Fact 1: Sweat is used for adjusting to hot temperatures by some animals.

Fact 2: Skin also helps control temperature, through adjustments of blood flow and evaporation of sweat.

Given the two facts above, answer the question "What can help some animals to adjust to hot temperatures?" with the following options: 
- fur
 - speed
 - pH
 - skin
 - fats
 - heat
 - fibers
 - strength


 

    skin     