Answer:

Why is too much soil erosion harmful?
- It has led to increased pollution and sedimentation in streams and rivers, clogging these waterways and causing declines in fish and other species
What can we do to prevent soil erosion? (Give at least 3 answers)
-Maintaining a healthy, perennial plant cover.
-Mulching.
-Planting a cover crop such as winter rye in vegetable gardens.
Which among the layers of the earth is suitable for plans to grow? why?
-The uppermost layer of the earth's crust (in which plants grow) is called soil.

:D

1.Soil is a natural resource that may look robust and endless, but is in fact the fragile product of thousands of years of formation. Topsoil, which lies closest to the surface of the land, contains essential nutrients for crops. It is this layer of soil that is endangered by wind and water erosion. Soil erosion decreases soil fertility, which can negatively affect crop yields. It also sends soil-laden water downstream, which can create heavy layers of sediment that prevent streams and rivers from flowing smoothly and can eventually lead to flooding. Once soil erosion occurs, it is more likely to happen again.

2.

•Use Soil-friendly Agricultural Practices

Use Soil-friendly Agricultural PracticesTerraced farming needs to be implemented to make hillside agriculture manageable.

•The key to managing and reducing soil erosion is to rehabilitate already-damaged land, stop further degradation and put erosion-preventative measures at the core of land management policy.

•Although the science of sustainable land management has been gaining support, the socio-economic context often makes implementation difficult. Sustainable land practices need to be financially viable for farmers. Anti-erosion measures have a median cost of $500 per hectare, a considerable investment for a farmer.

3.A HORIZON- This is the layer that we call "topsoil" and it is located just below the O Horizon. This layer is made up of minerals and decomposed organic matter and it is also very dark in color. This is the layer that many plants roots grow in.