A well designed experiment A. tests multiple varlables at once B. supports your hypothesis does not need multiple trials C. is controlled to only test one variable

light dependent reactions:

light independent reactions:

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water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.