Which sentence uses commas correctly? a) one day matthew would love to play golf on the pga tour win the masters, and design golf courses. b) she wants to become a pharmacist so that she can others pay her bills, and live independently. c) michael's biggest dream is to graduate college, move to new york become an actor, and win a tony award. d) after winning the lottery, sam retired from his job, bought a small house on the lake, and paid for his kids' college tuition.

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

Compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.