The troposphere is the lowest level of the atmosphere, so it is in contact with the Earth's surface. In contrast, the stratosphere is located above the troposphere, so it is not in contact with the Earth's surface. ... The air density and air pressure are much lower in the stratosphere.
What Herbert ??? (Unnecessary)
A leaflet is kind of like a brochure, but for whatever subject you’re doing it on. Can we see the directions please?
