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Well, it's obviously habitable or we would not be here to question it!.

Why? The main reasons are:

Suitable temperature range for life.

Plentiful supply of water that circulated from brine (sea-water) to fresh (rain, snow, dew) and back.

An atmosphere containing oxygen and shielding the planet's surface from harmful levels of solar radiation.

- All three reasonably stable over sufficiently long time (geologically) for life to develop.

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Jenifer Carter

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3y ago

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