On Mars dust storms range from small dust devils, similar to those that form in deserts on Earth, to larger continent-sized storms. These larger storms sometimes combine into the global storms, which cover the entire planet in atmospheric dust.
Arrange the sentences below to "build a dust storm."
1 - Heat warms the air closest to the surface, leaving the upper air cooler.
2 - Warm air rises up and takes dust with it.
3 - Radiative heat of sunlight reaches the surface of the planet.
4 - Warm and cool air together become unstable.

Read the list of selections from the article. trump still seeks a border wall and said he might shut down the government again over it. a strong majority of americans blamed him for the standoff. and they rejected his arguments for a border wall, recent polls show. it is not clear how trump would fund the wall by declaring a national emergency. minutes later, senators voted 52-44 for a democratic plan to open agencies through february 8 with no wall money. that was eight votes short. yet it got more support than trump's republican plan, even though republicans control the senate 53-47. which two selections, taken together, provide the best evidence to support the idea that most people do not support funding a border wall? a 1 and 3 b 1 and 4 c 2 and 3 d 2 and 4

The social contact theory states that

According to your study unit what is the main reason that improved human relations skills may improve your grade