Which of the following best describes how the Constitution’s authority extended to individual states? a. Only Northern states had to obey it.
b. Only Southern states had to obey it.
c. Only states that ratified it had to obey it.
d. Only states that rejected it had to obey it.

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste