Exosphere
Dust, water vapor etc are in troposphere. It is the closest layer.
The atmosphere is the sphere that contains nitrogen and oxygen, as well as dust, rain, and cloud droplets.
The Earth's atmosphere contains solid particles like dust, pollen, and volcanic ash. It also contains liquid water in the form of clouds, fog, and raindrops.
Immediately above the Venusian surface is a clear region of atmosphere, stretching up to a height of 40km or so. Above the thick, unbroken cloud layer raising a further 20km. The clods, which contains dust and sulphuric acid, stop direct sunlight from reaching the surface, making Venus permanently overcast. Finally, there is a clear, sparse layer of atmosphere stretching at least another 20km.
oxygen, hydrogen, water vapour, carbon dioxide, other gases, particles
The Earth's atmosphere contains primarily nitrogen (about 78%), oxygen (about 21%), and trace amounts of other gases like argon, carbon dioxide, and water vapor. It also contains aerosols, such as dust and pollutants.
It's the troposphere because :The troposphere contains 75 per cent of the atmosphere's gas. It also holds huge amounts of dust and water vapor, and is often dense with clouds and mist. Air pressure is greatest in the troposphere, because gravity pulls the atmosphere towards the Earth, squeezing most of its weight into this lowest layer.
The Earth's atmosphere contains gases such as nitrogen, oxygen, argon, and carbon dioxide. It also contains water vapor, dust, and pollutants like airborne particulate matter and trace gases. Additionally, the atmosphere includes variable components such as clouds and aerosols.
In a dry, dust free, atmosphere, away from strong magnetic sources. Generally in their original packaging, with a sachet of silica gel to absorb moisture.
A tornado is made up of violently rotating air. It often contains moisture that has condensed as well as dust and sometimes debris that the tornado has picked up.
Mars is red because its top layer is composed of mostly iron oxide (rust). The atmosphere appears red because the wind picks up the red dust and carries it.
The cornea is the part of the eye that contains epithelial tissue. This thin, transparent layer covers the front of the eye and helps to protect it from dust and other particles.