An organism's "trophic level" refers to see concept 54.2 (page 1221)

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

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 !