Skiers use flat skis to to help them go fast they make a pizza by digging the side of their skis
because of pressure
because if they have a smooth surface they ski faster
Because if skis were short and round, they would be called "bicycles".
Because if they used anything else they wouldn't be skiers.
You can use a Topographic Map to see where your trip would be flat or hilly, warm or cold.
Over a large area In common use to a great extent
Yes, beavers are animals with flat tails. Their tails are broad and flat, and they use them for various purposes, such as balancing, communicating, and building dams.
I honestly have no idea at all :)
Skies is the place above the earth. "The skies are clear and there are no clouds"
it is used to help athletes improve their performances
I see nothing but blue skies, from now on. The skies are quickly filling up with clouds.