Which process most likely forms rust on rocks? a. chemical weathering by oxidation b. mechanical weathering by ice wedging c. mechanical weathering by wind d. chemical weathering by acid rain question resources

A. chemical weathering by oxidation

Weathering is a natural process in which the rock is broken down into small pieces and sediments under the influence of agents like wind, water and chemicals. Chemical weathering is a process in which the rocks breaks down due to the effect of the chemicals. It brings change in the chemical composition of the broken pieces and sediments distinct from the parent rock.

Rust on rocks is a an example of chemical weathering by oxidation. The rock mainly exhibiting elements which can be easily oxidized such as iron undergoes rusting this occurs because oxygen breaks the bonds between the elements in the rock. The internal structure of the rock becomes weak and results in rusting.

c

explanation:

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.