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.
The answer is either B or D
<span>President Ronald Regan’s goal
for this speech was to see the destruction of the Berlin Wall. However, it was not just the destruction of
the wall that President Ronald Regan was calling for. The call for the taking down of the wall was
really a call to end the Communist rule over East Germany. An end to Communist control over East Germany
would have seen the beginning of peace and stability across Eastern Europe,
which is what the goal really was by President Ronald Regan’s saying “Mr.
Gobachev, tear down this wall!”</span>
