Given that our solar system is now about 4.6 billion years old, when will we need to start worrying about the sun running out of hydrogen for fusion?

Approximately, what basic composition are all stars born with? a) 98 percent hydrogen, 2 percent helium b) half hydrogen, half helium, no more than 2 percent heavier elements c) three-quarters hydrogen, one-quarter helium, no more than 2 percent

Discuss the factors that contribute to persons becoming refugees

Which countries have banks along the Rhine River? Switzerland Austria Scotland France Germany Belgium

The Hawaiian Islands are associated with what type of volcanism? intraplate volcanism volcanism at a divergent plate boundary subduction zone volcanism volcanism at a convergent plate boundary

Define fragment, and give one example of a fragment and two possible corrections.

Why did the French Revolution lead to war with other nations?

Eight pounds of potatoes cost $4.72 how much will 30 pounds cost

Ice hotel facts? in sweden

Compared with the land in the highlands, the lowlands region of England is___. A) Rockier and more difficult for farming B) The center of business and industry C) Richer in coal reserves D) Covered by more fertile farmland Answer: D) Covered by more

What are the three main types of erosion caused by glaciers?