Question

1. what percent of the earth’s land surface is covered with mountains? __________
2. why is above 8 kilometers on a mountain sometimes called a death zone?

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1. plateaus are sometimes called __________ and forests. they are mostly hard ______ ________

Explanation:

1. Approximately 24% of the Earth's land surface is covered with mountains. This is based on geographical studies of the Earth's topography.
2. Above 8 kilometers on a mountain is called a death - zone because the amount of oxygen is extremely low, making it very difficult for human survival without supplemental oxygen. The body struggles to function properly due to the hypoxic conditions.
3. Plateaus are sometimes called tablelands. They are often characterized by being hard and flat in some areas and can support forests.

Answer:

1. Approximately 24%
2. Due to extremely low oxygen levels making human survival difficult without supplemental oxygen.
3. Tablelands