Answer:
⏩Moon has no atmosphere because it has very weak gravitational force.
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<span>A harsh natural environment is a factor that directly influences population density. This is because for an organism to survive in a given area, the conditions or environment surrounding it needs to either be favourable or directly support it's existence. If the environment is harsh it is automatic that organisms will seek a more favourable area therefore creating a high population density where conditions support their existence.</span>
When there are no signs of an active magma chamber beneath the volcano (no unusual seismic activity, no volcanic gasses escaping etc.), and when there hasn't been any activity for a long time span (at least 10,000 years).
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Answer:
Water is necessary to sustaining life on Earth, and helps tie together the Earth's lands, oceans, and atmosphere into an integrated system
Explanation: