The ability to hear often decreases with age because

Athetes are often trained at high altitude because

A metal 's ability to conduct electricity is because of ?

Explain with suitable examples that the oxidation ability of halogens decreases from fluorine to iodine.

NaCl solution has the ability to conduct electricity because it is a __________ compound but urea cannot conduct electricity because it is a ____________ compound.

Often in water bodies subjected to sewage pollution, fishes die because of the:

People recovering from long illness are often advised to take Spirulina because it