1) Thickness of troposphere layer is .................... a) 13 km b) 31 km c) thickness of paper 2) Atmospheric pressure in troposphere layer a) decreases as we go up b) increases as we go up 3) All weather phenomenon occurs at ..................... a) troposphere layer b) mesosphere layer c) stratosphere layer d) exosphere layer 4) Troposphere layer organizes the Earth's temperature as it contain ................... of total atmospheric ............... a) 95 % - water vapor b) 99 % - water vapor c) 99 % pressure d) 90 % - water vapor 5) All weather phenomenon occurs in troposphere layer , where the temperature increases as we go up  a) Both statements are right b) Both statements are wrong c) First statement is true , while the second is wrong d) First statement is wrong , while the second statement is true 6) Troposphere layer contain about ............. of total mass of atmospheric air a) 70 % b) 75 % c) 99 % d) 90 % 7) prefix "Tropo" means ................ a) change b) first c) layer d) constant 8) troposphere is the ........................... layer of atmosphere a) first b) second c) third d) forth 9) Air near to sea level is ............................ , and as we go up it becomes ............................. a) cooler - warmer b) warmer - cooler c) no change in temperature

troposhere layer

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