When standing in a stream bed, you observe identical layers of sedimentary strata on both sides of the bed. Which came first, the sedimentary rocks, or the stream? Explain your reasoning, including what principle you are using.

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.

Asap! ! ! ! true or false the gobi desert, the largest desert in asia. covers parts of northern china and southern russia

Democratic vs democratic whats the difference? ?