Assertion: cattail's leaf | /r/CapableOf | help prevent the plant
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text: In addition, submerged deep water plants tend to have smaller leaves or lack them altogether; if there is a change in water movement, these small leaves will not catch as much resistance as larger leaves would, and therefore help prevent the plant from moving about or being fully uprooted by the movement, whether it’s caused by a passing fish, living in a fast-flowing river, or a water pump.