The contraction of the diaphragm causes it to move down, increasing the volume of the thoracic cavity. This movement and volume change decrease the pressure in the lungs, and air rushes in.
Gills
Gills enable tadpoles to breathe in the water.
The lower jaw enables us to chew and to speak
It comes from the food you eat or the water you drink. You can't live without food, and if you try, you will be very weak. That's why food gives us energy.
the answer is breathe.
They don't. Dolphins have lungs, and have to Surface to Breathe. Thye hold their breath while diving.
The body part that enables you to breathe through your mouth when your nose is closed is the oral cavity, which includes the mouth and throat. The throat, or pharynx, connects both the nasal passages and the mouth, allowing air to flow from the mouth into the respiratory system. This ability to breathe through the mouth is especially useful when nasal breathing is obstructed.
Squirrels have lungs to breathe with, just like us.
magic
CO2 - the opposite of us.
we will die
I'm going to go out on a limb here and say food.