When plate tectonic cause cracks to form what?

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.

East asia is considered a less developed nation. true or false

According to speculation and study, what will happen to the global birth rate in about 40 years? (1 point)