Saturday 14 February 2015

All living things need air to live.

                                            All living things need air to live.
Air around us cannot be seen but we know it is there. Air contains many particles so small that they cannot be seen easily. air contain smoke, dust and bits of ash. Air also contains gases all living things need air to live. Air contains water vapor' which is actually water turned in to gas! when water boils changes in to water vapor. when wet clothes are put out to dry the water in them goes into the air. That is why the clothes become dry. some gases that enter air are poisonous they make the air impure. They can be very harm full. When a volcano erupts smoke ash' and gases escape of cause pollution in the air. We can fell moving air. When we run we fell the air pushing against our face and body. If you wave your hands up and down you will feel the air.....


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