While the constitution is the law of the land it still lacked some things. The founding fathers knew that future government may take advantage of it, so they added the bill of rights and allowed for more amendments. The bill of rights which are the first ten amendments state that people have a freedom of speech and religion, the right to bare arms,the right to a fair trial ect. Other amendments provide for things like women suffrage.
A dependent variable is something you control, so probably drugs (as the researcher will ensure that they stay drug free)
A scientist that would be most likely to study peking man is an archaeologist.
Answer:
Eratosthenes
Explanation:
When the geographers of the Greek era started estimating scientifically the circumference of the earth, a huge impulse was given to the cartographic science.