Dry air contains _____________________ of carbon di oxide.

A __________ is dark funnel shaped cloud that reaches from the sky to the ground.

____________ is used to measure the speed of wind.

High wind speed and air pressure difference in an air can cause ________

Winds carrying water vapour brings _____________

_____________ are generated due to uneven heating on earth

Storm with thunder lighting along with rain is called ____________________

The invisible gaseous substance surrounding the earth is known as

Warm air is ___________ than the cold air.

It has become easier to monitor cyclone with help of advance technology like ______________

Air moves from _________ pressure region to ______ pressure region.

Air expands on ____________ and contracts on cooling

________________ around us exerts pressure.

Dry air contains __________ nitrogen.