Removing vegetation from a hillsides will make the land bare and open to the eroding effects of water and wind. The vegetation on a hills sides normally hold the soil particles together by means of their roots and prevent the soils from been carried away. When these vegetations are removed, the rate at which the soil will be washed down the slope by water and wind will be very high.
energetic charged particles, most of which originate from the solar wind, that are captured by and held around a planet by that planet's magnetic field.
