I believe the answer is D. The NASA mission which sent a probe to collide with a comet's nucleus is the Deep Impact. It is the first mission sent in order to see the interior of a comet. The comet that was aimed was called the Comet Tempel 1.
Yes topaz is natural and formed and earth.
I think two giant asteroids crashed into each other billions and trillions of years ago and slowly within the billions of years to come, one formed into earth and the other formed into the moon... Well something like that
I believe the answer you are looking for are basins, Basins have coal and gas deposits
Answer:
By switching to a company that provides electricity from solar, wind, or hydroelectric energy, you can reduce your household emissions and save money on your energy bills. You could even install solar panels if they're readily available where you live.
