name the part of alimentary canal that grinds lumps of food up and mixes it with saliva (without explanation)

Mouth or oral cavity

Explanation:

The alimentary canal is the long passage through which the food passes. It includes components like mouth, esophagus, stomach, intestines, and anus. It is supplied by digestive juices and secretions by other organs like liver, and pancreas which are not the part of the alimentary canal. Mouth or oral cavity or buccal cavity is the first component of the alimentary canal from where the food enters in the body. It is grinded and masticated by the teeth and mixed with the saliva so that it is converted into liquid form easily swallowed through the gut. The saliva is produced by the salivary amylase enzyme present in the mouth.

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.