How bad is the Earth after 1 billion years?

After a billion years, the Earth will have an average temperature of 47 degrees Celsius, no more eclipses will appear, 99% of the trees will disappear, the oceans will completely evaporate, most organisms living will be exterminated.

What happens when the Earth falls into a black hole?
What happens if obnoxious mosquitoes disappear completely on Earth?

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