Astronomers recognize 88 constellations of stars in the sky, including the 12 zodiac constellations. how are these constellations used by astronomers?
a. to find the location of the milky way.
b. to identify stars which are the same distance from earth.
c. to track the movement of the sun during the year.
d. to name nearby galaxies.

Because its government strictly controls its economy, north korea has a economy. a. command b. mixed c. traditional d. free market

Which of the following statements best describes what is occurring in the land surrounding the sahara desert? a desertification is increasing, and the desert is expanding. b. fewer people are trying to farm in this semiarid region. c. the desert is shrinking with the increased use of irrigation. d. increased urbanization has resulted in decreased deforestation. select the best answer from the choices provided mark this and return save and exit next submit

Which of the following is not a reason why shenzhen, china, is considered an emerging global city