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Questions about Our Earth

Is our earth weight equal to our mass?

How old is our earth?

How can we save our earth from global warming?

What will happen if our earth is out of lava?

Is hydraulic fracking good or bad for our Earth?

How was our earth during the time of the dinosaurs?

Would a non-avian dinosaur survive in our earth today?

Can a gas giant become a rocky planet like our Earth?