GREENHOUSE EFFECT: definition and how humans have a role in creating this phenomenon.

definition: The trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.

Role People Have: On Earth, human activities are changing the natural greenhouse. over the last century the burning of fossil fuels like coal and oils has increased the concentration of atmospheric carbon dioxide. This happens becuase the coal or oil process combines carbon and oxygen in tbe air to make co2.

Explanation:

Im a professor in planetary geography.

the proximity of water was an advantage to western europe and its culture was able to flourish as a result. trade and travel by sea were easier and safer in historical times.

1. there are no mountains to protect it from the sea

2. and its has wet cool summers and wet, mild winters.