Which of the following statements about water-walking insects is most accurate? To be able to move on the surface of the water, (A) Water-walkers that are less dense overall than water must have some non-wetting surfaces in contact with the water (B) Water-walkers that are more dense overall than water must have some non-wetting surfaces in contact with the water (C) Water-walkers that are more dense overall than water will sink regardless of the wettability of their water-contacting surfaces (D) There are no restrictions for the wetting conditions of water-walker surfaces in relation to the insect’s overall density.
answer is B) water walkers that are more dense overall than water must have non wetting surfaces i contact with the water.
Explaination- the water walkers have non wetting feet., called hydrophobic feet which repels the interaction between the water molecules and the feet of water walkers so the surface tension does not get broken, surface tension is a layer on the surface of water which are formed by the interaction of water molecules by a property of cohesion.
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