Which statement best compares coral reef ecosystems to demersal ecosystems? a. coral reef ecosystems are typically in shallow water, and demersal ecosystems can exist at any depth. b. coral reef ecosystems can support large fish like sharks and rays, and demersal ecosystems cannot. c. coral reef ecosystems may have starfish, clams, and other invertebrates, and demersal ecosystems have only fish.

Which of the following is an oxidation-reduction reaction? (pictured below)

Why does the skin of your finger shrink when you wash clothes for a long time?

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 !