Why do we need friction in our world?

Friction is a force that works against motion. While walking, friction helps us maintain our stability and prevents us from slipping. Friction also works the same way with cars and vehicles in general, preventing them from skidding and helping them stop when the brakes are applied. We also need friction to make a fire.

answer; ///(b) it is composed of four protein chains and four heme groups;

the animal that would be cutest if scaled down to the size of a cat? elephant