A swimmer finds it easier to swim in seawater than in a river because the density of seawater is higher than that of ordinary water. The higher density provides more buoyant force, which helps the swimmer to float and swim more easily.
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A swimmer finds it easier to swim in seawater than in a river because the density of seawater is higher than that of ordinary water. The higher density provides more buoyant force, which helps the swimmer to float and swim more easily.
A swimmer finds it easier to swim in seawater than in a river because the density of seawater is higher than that of ordinary water (C). Higher density in seawater provides more buoyant force, allowing the swimmer to float more easily and requiring less effort to stay afloat. This increased buoyancy aids in maintaining proper body positioning and reduces the risk of sinking. Additionally, the salt content in seawater contributes to increased buoyancy compared to freshwater. Options (A), (B), and (D) are irrelevant to the ease of swimming in seawater and do not address the specific physical properties that make swimming easier, such as buoyancy. Therefore, the correct option is (C) The density of seawater is higher than that of ordinary water.