Question

1. in your own words, describe the atmosphere and give one example of how it affects life on earth.
2. give two examples of how the biosphere interacts with the hydrosphere.
3. explain how humans can impact the geosphere in both positive and negative ways.

Explanation:

1. The atmosphere is a layer of gases surrounding the Earth. It contains oxygen for respiration. For example, it protects life from harmful UV - rays by absorbing them with the ozone layer.
2. Fish in the hydrosphere are part of the biosphere and breathe oxygen dissolved in water. Plants in the biosphere take up water from the hydrosphere for photosynthesis.
3. Positive: Planting trees helps soil conservation and reduces erosion. Negative: Mining activities can cause land degradation and disrupt ecosystems.

Answer:

1. The atmosphere is a gaseous envelope around Earth. It protects life from UV - rays.
2. Fish breathe dissolved oxygen in water; plants take up water for photosynthesis.
3. Positive: Tree - planting for soil conservation. Negative: Mining causes land degradation.