Answer:
Hot, humid air rises over the equator. As it rises to high altitude it expands because the air pressure decreases (there is less mass of air above it). As air expands due to this decreasing pressure, it also cools. Since cool air is able to hold less water vapor than warm air, condensation occurs.
Believe it's... people working in midday.
The scissors have 1 line of symmetry c:
First turn 18% to a decimal, which is .18, then multiply it by 450.
450 x .18 = 81
Primary sources can be described as those sources that are closest to the origin of the information. They contain raw information and thus, must be interpreted by researchers. Secondary sources are closely related to primary sources and often interpret them.
