Which of earth's layers is comprised mainly of extremely hot liquid metals?
crust
mantle
outer core
inner core

What is the primary purpose of a game reserve?

What is found within a ranger tower overlooking a drained lake

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.