Question

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Answer 1

Answer:

1.Because it lies almost exactly above Earth's northern axis, it's like the hub of a wheel. It doesn't rise or set. Instead, it appears to stay put in the northern sky. What's more, the star we know as Polaris hasn't been the only North Star.

2.Mountaineers carry oxygen cylinders while going to high mountain peaks because altitude increases as they climb the mountain. The amount of oxygen decreases as the altitude increases. The reason for the decrease in the amount of oxygen gas is because trees are not found in high altitudes. Therefore some parts of their body do not get sufficient supply of oxygen gas.

Answer 2

Answer:

1. Polaris, the North Star, appears stationary in the sky because it is positioned close to the line of Earth's axis projected into space. As such, it is the only bright star whose position relative to a rotating Earth does not change. All other stars appear to move opposite to the Earth's rotation beneath them.

2. Mountaineers carry oxygen bottles while going to high mountain peaks because altitude increases as they climb the mountain.

Explanation:

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