Covalant bond is directional in nature. Justify.

Covalent bond is formed when

In covalent bond formation

What is directional natural selection. Illustrate with suitable example.

DNA is a genetic material. Justify.

"Mineral absorption is mainly an active process". Justify.

Cockroaches are bioindicators. Justify.

In a covalent bond, a difference of 1.7 in the electronegativities of the combining atoms produces an ionic character of about ___________.

Liver is a vital organ. Justify.

Answer the following It is necessary to manage solid wastes. Justify.

After the formation of four Covalent bonds, Carbon attains the electronic configuration of _____________