5. The conservation of soil is important because​

Soil is the basis for sustenance for 7 billion people. It preserves clean water and helps regulate the climate. Soil degradation reduces agricultural yields and threatens farmers' livelihoods. Soil that has been leached of its nutrients cannot support crops, or plants that prevent desertification. Because most organisms in the soil depend on dead plant and animal matter for their food and energy, soil conservation requires that organic matter be returned to the soil on a continual basis.

Explanation:

a time line cause it goes from 685 to 978