Respuesta :
Crops. Well the earth climate is pretty unique due to the balance of substances in the atmosphere caused by the plant and also animal life on the planet. Or so I believe.
Landforms. This is because they can shift their structure, and they have an effect on where people live, (such as living on a plain or by a mountain). They change where people grow food, for example, you are less likely to grow food in a snowy place, rather than a plain.