How does an actual greenhouse work?

A greenhouse is a building with glass walls and a glass roof. In the daytime, sunlight shines into the greenhouse and warms the plants and air inside. At nighttime, it's colder outside, but the greenhouse stays pretty warm inside. That's because the glass walls of the greenhouse trap the Sun's heat.

Explanation:

i would think yes.

explanation:

because we have every natianlity in our country which makes us so diverse and unique. that's why in a lot of cities there are places like little italy, koreatown, chinatown.  

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.