Trade routes are
not determined by

ship design
geography
international relations
modern technology

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.

Hey, i was what is consisted in a sustainable city? like what unique designs they have, etc. for answering ; )

Select the natural regions. delta denver forest georgia north america plateau stream