What does "how many shots" mean?

Which best summarizes what scientists learned about how microbes benefit the human body? they are part of a normal human ecosystem. they have become less harmful to humans than they used to be. they process nutrients, fight disease, and accommodate change. they humans overcome the effects of antibiotics.`

It’s ok to use materials without referencing them as long as they’re paraphrased in your own words. a. false b. true c. sometimes d. depends

Which of the following root words means "small"?