✋Introduction
Breathing, respiration and gas exchange
In this lesson: I can describe the differences between breathing, respiration and gas exchange. Humans and other animals breathe to move air in and out of their lungs. Cells need oxygen from the air for cellular respiration, to provide energy for life processes.
Lesson outcome
Waxaan sharxi karaa farqiga u dhexeeya neefsashada, neefsiga unugyada, iyo is-weydaarsiga gaaska.