General Science Questions

Healthy blood pressure ranges from 120/80 to 90/60.

The term ageism refers to judging people on the basis of chronological age. It is a discrimination against individuals or groups on the basis of their age.

The main cause of Tsunami is Earthquake on Sea Surface.

Mortar is a mixture of cement or lime as a binder, sand and water.

In humans all reproduction is sexual. It involves joining together haploid gamete cells from each parent with half the normal number of chromosomes to make a new cell containing both parents' genetic material. This is a diploid zygote. The cells from each parent that combine to form the zygote are called gametes.

Meiosis produces haploid gametes from a diploid parental cell.

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.