How many degress are there in each exterior angle of an equiangular triangle?

Explain how a convection current in the earth is formed.

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.

About 140,000 japanese died in this japanese city when americans dropped an atomic bob at the end of world war ii