Answer: People know that they jap e learned by their mistakes or by someone ya being them something
When electrons are lost a positive ion is formed. When electrons are gained, a negative ion is formed. I hope this helps
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Planting of trees on sloped surfaces is a method of conservation that utilizes the roots of plants. Planting trees on such areas would prevent hazards and maintain the soil formation future since the roots would hold the soil together preventing or minimizing any soil erosion.