Ahookworm is an intestinal worm that attaches to the lining of the intestine of its host and sucks body fluids. what term best describes the symbiotic relationship between the hookworm and its host?
a) mutualism.
b) commensalism.
c) parasitism.

c) Parasitism.

Explanation:

Parasitism refers to the ecological interaction between members of two species wherein one organism (the parasite) derives benefit while the other (the host) is harmed.

In the given example, the parasite hookworm derives its nutrition from the body fluid of its host. The hookworm is getting its nutrition while the host cells are deprived of the body fluid. So, hookworm and its host represent the parasitism.

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.