Describe what happens whan a key stone species is removed from an ecosystem

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

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 !