Final answer:
Conserving soil can be achieved through no-till farming, crop rotation, and contour plowing & terracing, which protect soil moisture, improve fertility, and reduce erosion.
Step-by-step explanation:
To help conserve soil, three practices that can be employed are no-till farming, crop rotation, and contour plowing & terracing. No-till farming is important as it helps maintain soil moisture, prevent topsoil erosion, and limit compaction. It can also lead to the sequestration of carbon, reducing greenhouse gas emissions and promoting sustainability. Crop rotation improves soil fertility and helps break the cycle of pests and diseases, also reducing the need for chemical pesticides. Contour plowing and terracing are techniques that reduce soil erosion and runoff, especially on slopes.