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Answer:i dont know the 3rd one

1 ) Hydrophytes are water loving plants. The hydrophytes with floating leaves have large leaves, stomata and waxy coating on the upper surface. The waxy coating prevent wetting and clogging of a waxy layer known as the cuticle covers the leaves of all plant species.

2 )

caudal fin is also known as commonly as the tail fin it is the primary append used for locomotion in many fishes

3 )

4 )padded feet help them not to sink in sand

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Hydrophytes are water loving plants. ... The waxy coating prevent wetting and clogging of a waxy layer known as the cuticle covers the leaves of all plant species. The cuticle reduces the rate of water loss from the leaf surface.

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The caudal fin, or tail fin, is located at the end of a fish and provides the power to move a fish forward. It also acts like a rudder to help a fish steer. Caudal fins come in a variety of shapes – forked, heart-shaped, square or rounded.

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The smaller feathers that cover a bird's body are called contour feathers. They lie flat against its body to protect it from wind, cold and sun. They also give the body a smooth, streamlined shape for flying.

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Camel have padded feet to increase the area of contact on sand... this will decrease the pressure and they are able to walk easily on sand... Camels have broad, flat, leathery feet with two toes on each foot. When the camel places its foot on the ground the pads spread, preventing the foot from sinking into the sand.