What is the nucleus of a comet thought to be made of?

dust and ice
debris and gases
small pebbles and rocks
liquid oxygen and gases

How did the end of the mexican american war result in growing sectionalism in the united states?

Which best describes the purpose of the south carolina exposition and protest, which was written by john c. calhoun? a) to explain why the south was nullifying the tariff of 1828 b) to describe the ways the tariff of 1828 would southerners c) to persuade northern states to rebel against the federal government d) to ask england for if the south decided to secede from the union

The party that has the second most members in the house but not the most