Camel excrete concentrated urine. Give reason.

mRNA is short lived. Give reason.

Birds are uricotelic in nature. Give reason.

Proteins are amphoteric in nature. Give reason

Give reasons : A camel's feet do not penetrate into the sand .

DNA replication is semiconservative. Give reason/Justify.

Archaeopteryx is a connecting link. Give reason

Give the scientific reason : All the mass of an atom is concentrated in the nucleus.

Why is counter current mechanism essential for concentration of urine? Explain.

Give scientific reasons While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.

Aves and Mammals are homeotherms. Give reasons.