The correct answer is All of the above. While rice has a submerged growth state, most weeds, and pests do not. Flooding the fields causes the soil to degrade so weeds cannot take root. <span>Residual herbicides and pesticides from previous seasons dissolve in the water.
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The Moon appears to change shape because we see different amounts of the lit part as the Moon orbits Earth. From Earth's perspective, we see varying amounts of the illuminated part of the Moon.
