Condensation is when water vapour (a gas) turns into a liquid. This can be obverved on the outside of a glass and is also the process which forms clouds. If you yourself can observe condensation, it must be in the bottom layer of the atmosphere, the troposphere.
Both are good. Depends on what actors and singers you are talking about.
The bottom 2. Gulf of Guinea and Eastern Brazil. (Mid-eastern Africa and Mid-western South America.) If you look closely, they actually could almost fit.
Its a unitary goverment. hope that helps you out.