Why is earth the only planet that will ever support life?

Explanation:

Earth is well equipped as a planet and ideally placed in our solar system and galaxy to support life as we know it. As it is not so far nor is it so close to the sun and the moon its in the middle.It isn't so warm nor is it cold the atmosphere is bang on for us to live on It has everything balanced and the right amounts of chemicals/gases in the air.As well as that their i water which i essential for use to live.

Because, Earth is a one special planet.

Explanation:

It has liquid water, plate tectonics, and an atmosphere that shelters it from the worst of the sun's rays. But many scientists agree our planet's most special feature might just be us.

Though other bodies in our solar system, such as Saturn's moon Titan, seem like they could have once been hospitable to some form of life, and scientists still have hope of eventually digging up microbes beneath the surface of Mars, Earth is still the only world known to support life.

The fact that Earth hosts not just life, but intelligent life, makes it doubly unique. And the planet's intelligent life (humanity) has even developed rockets that enable travel beyond the planet.

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if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.