Minerals may form on earth’s surface when
a. magma heats a solution.
b. crystallization is delayed.
c. solutions evaporate.
d. pure metals are present

The correct answer is option C; solutions evaporate

Explanation:

A mineral is formed when the solution in which it is dissolved just evaporates leaving behind magma for crystallization. The solution containing large amount of dissolved solid is warmed in an open container and  the solvent  is allowed to evaporate thereby leaving behind   a saturated solution which on further evaporation leads to the production of crystals

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

a community that experiences major changes undergoes progress