Question

3. The bodies of birds and fishes must have evolved to shapes which would make
them not to loose much energy in overcoming
a) Rolling friction

b) Static friction
c) Sliding friction
d) Fluid friction​

Answer 1

Answer:

rolling friction

Explanation:

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Answer 2

Explanation:

Birds and the fishes have to move about in fluids all the times. Their bodies must have evolved to shapes which would make them not to lose much energy in overcoming friction. Such shapes are called streamlined