How did the Quillpen family earn extra money? Mr. Quillpen built houses.
Mrs. Quillpen sewed clothes.
The Quillpen children raked leaves.
Mr. Quillpen delivered groceries.

i discarded the supernatant and kept the pellet in this part of the experiment because you have to return all unused chemicals into their original containers at the end of each labratory.

explanation:

option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation:

b) they want the land taken away from the wealthy landowners and given to peasants.