A mineral is a combination of two or more rocks that are composed of pure elements or pure compounds. a. True
b. False

How does the brandt line, walt rostow's modernization model, neocolonialism, and walterstein's world systems theory inform and intersect with each other when explaining economic development?

An earthquake’s epicenter can be determined from arrival time data recorded on a(

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.