Eis forEnvironment
The equator is an imaginary line drawn around the earth that is equally distant from the north and south poles, dividing the earth into hemispheres.
An eraser is a piece of soft rubber or plastic that is used to rub out mistakes you make with lead pencil.
Something gets eroded if it is being worn away. Mountains slowly erode over time and the rock they are made from turns to dirt.
Erosion is only a problem if it happens too fast. When people cut down a lot of trees and plants all at the same time, there is nothing to hold the dirt together so it either gets blown away by the wind or washed away by rain. Once the soil has eroded away there is nothing to grow plants in for food, and the land becomes useless. The picture is of some bad erosion around a creek.
Erosion is the process by which something becomes eroded. Something is eroded by being worn away slowly over time, usually from the action of wind or running water. Even the hardest rock can slowly become eroded.
Erosion is a problem if it happens too fast, for example when trees and plants are removed by people and then all the good soil is washed away because there is nothing holding it together anymore.