Halp meh study the image. at which point is cool air circulating beneath warm air? 1 2 3 4

Which of the following is a limitation of a clinical trial? a.)amount of random assignments b.)hospital cost c.)number of test tubes d.)amount of peer review

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above

What was one point or idea that most of the delegates to the state ratification conventions agreed upon? a. the constitution should protect the basic rights of the people and the powers of the states. b. the constitution would not work as a plan of government. c. the constitution was a weak plan of government not capable of uniting the states. d. the constitution should be ratified immediately without changes.