The Earth is the only planet in our solar system that seems capable of supporting life as we know it. What would be the biggest problem of trying to colonize Mercury? a.) too much rainfall
b.) the planet is too big
c.) an overabundance of fresh water
d.) extreme high and low temperatures

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