Which country has an economy based mostly on the production and sale of
energy?

Why did macarthur want to invade china? why did truman oppose this?

One of the brightest comets of the 20th century was comet hyakutake, which passed close to the sun in early 1996. the orbital period of this comet is estimated to be about 30,000 years. find the semi-major axis of this comet’s orbit. compare it to the average sun-pluto distance and to the distance to alpha centauri, the nearest star to the sun, which is 4.3 light-years distant.

Which layer surrounds the center of the earth? a: crust b: core c: mantle