Explanation:
A stem cell is a cell with the unique ability to develop into specialised cell types in the body. In the future they may be used to replace cells and tissues that have been damaged or lost due to disease.
Answer: Electromagnetic waves
Explanation: The main property of the waves is the way how they propagate or travel in medium The waves which can travel without a medium is said to travel in vacuum or air.
Aero is the prefix for oxygen or air
Aerobic= needs air
Anaerobic=no air needed