Natural weathering rates are limited by, among other factors, the exposedsurfacearea of chemically reactive rock.
自然风化的速度受进行化学反应岩石的接触表面积等因素限制。
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That can be used as a proxy for phytoplankton population in a given area, since the tiny organisms live close to the ocean's surface, where they are exposed to sunlight they use to produce energy.
They're crisper and thinner than regular fries, which means that they're exposed to greater heat per surfacearea, killing pathogens and reducing water content.