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By expanding and contracting their swim bladders fish can change their level in water How does this enable fish to become more or less buoyant?
Wiki User
∙ 12y ago
(a) This helps them become more or less buoyant, because if they release the gas then they will sink making it more buoyant by getting air from the surface or from other bubbles it makes them less buoyant, making them float.
Wiki User
∙ 12y ago
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