(1) Of what use are their legs to theseanimals?(2) What helpshelps frogs to breatheunderwater?(3) Of what use are the long hind legsof a frog?(4) Why doesn't a duck get wet inwater?
Answers
Answer:
1. Animals use their legs for locomotion.
2. Frogs can also breathe through their skin. They need to keep their skin moist to be able to breathe through their skin, so if their skin dries out they are not able to absorb oxygen. They use their skin to absorb oxygen when underwater, but if there is not enough oxygen in the water, they will drown.
3. Long hind legs of a frog are useful for jumping and swimming.
Various animals adapt according to the surroundings by different methods.
Frogs have long webbed hind legs for jumping and swimming.
Long hind legs help it exert thrust for jumping.
Webbed hind legs help it for swimming in water.
4. duck has webbed feet that helps duck to swim in water therefore a duck does not get wet in water.
The webbed feet help duck to swim in shallow water and also keep it little above from the water surface.