In an animal species known for endurance running rather than fast sprinting, you would expect to find a

because growing process had stoped after 4-5 year

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.