Which one of the following layers of the atmosphere contains water vapour and dust particles ?

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(Q: 15 (IES/2000)
Which one of the following layers of the atmosphere contains water vapour and dust particles ?

question_subject: 

Geography

question_exam: 

IES

stats: 

0,166,54,16,6,32,166

keywords: 

{'atmosphere': [1, 1, 4, 7], 'troposphere': [6, 1, 1, 1], 'dust particles': [0, 1, 1, 1], 'stratosphere': [1, 0, 1, 0], 'water vapour': [0, 0, 1, 2], 'mesosphere': [2, 0, 0, 0], 'layers': [5, 2, 1, 10]}

Option 1: Ionosphere - This layer of the atmosphere is located above the mesosphere and contains ions and free electrons. It is responsible for the reflection and transmission of radio waves.

Option 2: Mesosphere - This layer is located above the stratosphere and contains very low levels of water vapor and dust particles. It is also where meteoroids burn up upon entering the Earth`s atmosphere.

Option 3: Stratosphere - This layer is located above the troposphere and contains the ozone layer, which absorbs a significant amount of the sun`s ultraviolet radiation. It has very low levels of water vapor and dust particles.

Option 4: Troposphere - This is the lowest layer of the atmosphere, where weather occurs. It contains the majority of Earth`s water vapor and dust particles. The temperature generally decreases with increasing altitude in this layer.

Therefore, the correct answer is option 4 (Troposphere), as it is the layer of the atmosphere that contains water vapor and dust particles.

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