Which of the following aquariums would require the most air bubbled in to maintain oxygenation of the water: aquarium a with warm water and some fish; aquarium b with cold water, some fish, and some algae; or aquarium c with warm salt water and some fish? see section 42.1 (page 875) .
a. all the tanks would need the same amount of air bubbled in if they are the same volume.
b. aquarium b
c. aquarium c
d. aquarium a

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !