Which of the following sentences shows that Maya is making a contrast? The first article is written with an informal tone, but the second is very formal.
Both articles include the Grand Canyon as a very famous US landmark.
Each author gives a list of favorite landmarks found in North America.
These articles are both written to help travelers locate famous landmarks.

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.