Explain why,big boulders can be moved easily by flood ?

Explain whi big boulders can be moved easily by floods.

Why is big boulders can be moved easily by floods?

Floods can be prevented by

Floods can be prevented by

Floods can be prevented by

Explain why xenon can be liquefied more easily helium.

Explain why, we can easily move our hand in air but to do the same through a plank of wood, we need a karate expert.

Explain why the noble gases cannot be liquefied easily.

Explain why : Rivers and lakes do not freeze easily?