What pressure in atmospheres(atm) is equal to 45.6 kpa?

1 atm is equal to 101.3 kpa. 
therefore, to find the atm for 45.6kpa, divide 45.6 by 101.3 (and then multiply by 1 but that doesnt matter in this case).
giving 0.45 atm

Black round and partialy brown with little hairs that stick out, or a little creature that digs in the dirt that has wird pink whiskers in the front of its nose thats partily blind

They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).