Contour farming is a way of farming where you make little ridges in the earth that follow the shape of the hill or slope. It helps to stop soil from washing away when it rains.
It's like drawing a line on a picture of a hill that follows the shape of the hill. So, if the hill goes up, the line goes up, and if the hill goes down, the line goes down. This way, when it rains, the water runs along the line instead of washing away all the dirt down the hill.
When the water runs along the little ridges, it soaks into the dirt instead of washing it away. This helps to keep the dirt and nutrients in place and prevents soil erosion. This is important because if the soil washes away, it can be hard for plants to grow there, and it can also make the water dirty.
By using contour farming, farmers can grow more crops because the soil is healthier, and it also means they don't need as much fertilizer or other chemicals. This makes it better for the environment too because there are fewer chemicals in the soil and water.
So, contour farming is like drawing lines on the earth to keep the soil in place when it rains. This helps plants grow better, and it's better for the environment too!