Which is true of the adaptive immune response? it is always activated even before an "invasion" by an antigen occurs. it is involved with destroying body cells that have been infected with a pathogen. it reacts the same regardless of the type of antigen. it denies entry to the body and limits the spread of pathogens. it causes the release of complements.

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 !