Organisms use different types of adaptations to aid in their survival. many different types of animals hibernate throughout the winter. during hibernation, the animal's metabolism slows and its core temperature lowers. what is this process called?
a. torpor
b. sleep
c. hyperactivity
d. none of the above

The process in which the animal’s metabolism slows and its core temperature lowers is torpor. The answer is letter A. Animals could survive on colder temperatures through this process to allow them to save energy and use it little by little. Torpor is is a well controlled thermoregulatory process.

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.

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