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How can a plant cause weathering?
(a) a plant growing in a crack in a rock can change the course of flowing water so that more rock is carried away
(b) a plant can grow in a crack in a rock. As the plant and its root grow bigger, they can cause the rock to split
(c) a plant growing next to a rock releases chemicals into the soil
(d) a plant can collect and hold moisture that causes a rock to split
(b) a plant can grow in a crack in a rock. As the plant and its root grow bigger, they can cause the rock to split