Answer:
C. is correct for Humphreys collecting data for the Tearoom Trade study under the pretense that he was a lookout is an example of a violation of the principle of:
Explanation:
B) The House and the Senate appoint conferees to work out a compromise, and if they can agree on one, it goes back to Congress for another vote
Answer:
Copper:
Copper compounds produce blue colors in fireworks. Although Copper has a red appearance in solid form, when it’s set alight it creates stunning blue fireworks. Copper is used in electrical wire and roughly half of all copper mined is used for this purpose.
