intermolecular spaces among molecules of ....... are very large.

The number of posterior fingers in a hawk is ......... fingers.

....... are particles which are negatively charged and have negligible mass that revolve around the nucleus.

........ are a group of animals similar in their shape and reproduce together producing fertile individuals.

It is the liquid element molecule that consists of two atoms ...........

In the car engine, chemical energy is changed into ........ energy at first.

Hydrogen atom contains ..............

An element whose electrons are distributed in four energy levels and the outermost level contains half number of "K" level so, its atomic number is .......

.......... is from arthropods that have numerous legs.

The skull in front of you belongs to ..........

the living organism in front of you represents ...........