Using four or more complete sentences, identify three types of cultures found in the world and describe one characteristic of each. Make sure to provide one example of each.

Which revolution led to the development of these civilizations?

Exactly what kind of weather conditions would a cold front produce?

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.