Affichage de l'intervalle de résultats
2
1 - 2
Humans use two types of energy systems, the aerobic and the anaerobic. Most of us are familiar with aerobic power and aerobic exercise. In this system, the heartbeat and respiration increase and oxyge ...
This is the teacher's guide for the Lives of Cells unit of a middle school Human Biology book.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged ...