Well cooler air is heavier or denser therefore it will sink to the lower area. And the reason it is cooler at night than during the day is due to the sun's electromagnetic radiation which does not reach the dark side of the earth. So the atmosphere at night emits more energy into space than it absorbs therefore the tempature increases.
<span>it is the opposition by residents to a new building or project since it is close to them. If all people feel this way, the landfill will never be built.</span>
Yes, because one system would have to much power and be able to have full control and do whatever they want. This would lead to corruption and tyranny.
