1. Thelayer lies beyond the stratosphere. It extends for 50 Kms- 80 Kms.It is some-times called as thelayer.It is the layer in2. The lowermost layer of the atmosphere iswhich we live. It extends uptoKms above the Earth's surface. Allchanges take place in this layer.3. The layer beyond the mesosphere isIt extends from 80 Kmsto Kms above earth's surface. Temperature is always high so it is also called asMesosphere and thermosphere are often referred as theThe air is very4. The outermost layer of the atmosphere isin this layer.5. The layer above thestratosphere layer is arays coming from the sun.is the stratosphere. In the outer part oflayer which protects us from the harmfulfly in this layerQ2. Correct the underlined words:1. Consumption means process in which gas cools down to liquid.2. Oxygen is required for photosynthesis.3. The water received after the process of distillation is sediment4. Smoke in air absorbs ultra-violet rays.5. Milk is known as universal solvent.Q3. Tick the correct option:1. Air contains maximum amount of carbon dioxide / oxygen.2. Soluble impurities in water are removed by distillation / sedimentation,3. The atmosphere supports / destroys life.4. We get more/ less oxygen to breathe as we go high up.5. Nearly 75% of the earth is covered with water/ air.242​