All animals need ______________ to make energy from food. We get this oxygen from the ____________ that we breathe. In order to get the oxygen into the blood where it can be transported to the rest of the body, the air travels through a system of organs called the __________________ systems.
The answer would be : All animals need oxygen to make energy from food. We get this oxygen from the air that wa breathe. In order to get the oxygen into the blood where it can be transported to the rest of the body, the air travels through a system of organs called respiratory systems.
