Read the section titled "natural gas." why is the use of natural gas as a fuel becoming more common? (site 1)

Natural gas as a fuel is becoming more common because it is a cleaner fossil fuel. The amounts of greenhouse gases emitted from the burning of natural gases are less than that of coal and petroleum products. Also, energy production from the natural gas does not produce a significant amount of ash and other types of byproducts that pollute the air and water. For this reason, natural gas is being more widely used as an energy source.

crop rotation kepy different plants in the soil instead of once constintly. when switching out plants you have different nutrients being absorbed at different speeds and different roots growing differently therfore the spoil and water flow have to adapt and carry fresh nutrients to carry the constant changes that were going on in the soil.

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