General Science Questions

PTH - Parathyroid hormone which balances calcium levels if they are low.

Lacto-ovo vegetarians who eat milk products and eggs but would not eat Meat, poultry, fish.

The head mirror used by ENT doctors is concave.

The air around us is a mixture of gases, mainly nitrogen and oxygen, but containing much smaller amounts of water and other gases.

Earth's atmosphere is composed of many gases. Their percentages by volume is given by::

 
78% Nitrogen,

21% Oxygen,

0.9% Argon, and

0.03% Carbon dioxide 

And very small percentages of other elements.

A rotating column of air is called as a Tornado which extends from the thunderstorm to the ground.

Transcription is a process of production of mRNA which occurs in the nucleus of the cell. After transcription, translation which occurs in the cytoplasm.