4. What are some concerns that arise as valuable soil becomes rarer?

The concerns are

1. Contour ploughing.

2. Terrace farming.

3. Keyline design.

4. Perimeter runoff control.

5. Windbreaks.

6. Cover crops/crop rotation.

7. Soil-conservation farming.

8. Salinity management.

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the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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