Help plz

H. The ermine's dark brown coat  in the summer changes to white is the winter.

Explanation:

If the ermine want to survive and not get attacked by predators, then they need to change the color of the coat from brown to white

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a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.