Collagen a. has a very regularly repeating primary protein structure. b. is a protein found in hair, among other things. c. is a dimer of two intertwined helices. d. has a very compact, springy structure. e. is composed almost entirely of beta-pleated sheets.

The correct option is B.

is a protein found in hair, among other things

Explanation:

Collagen is a structural protein found in different connective tissues of the body such as bones, cartilage, tendons, ligaments, skin e.t.c. it is the most abundant protein in mammals. It comprises of various amino acids that are join together to form triple helix of fibrils. Collagen is found in hair and other things because it is found in skin follicles that surrond the hair. The collagens that surrond the hair bulb increases the amount of hair and thicken it.

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.

not too sure but maybe in the hot springs.