Why did i get a f on my asinmen using this app

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.`

Money oweda. auditb. assetsc. capitald. liabilities

One of the benefits of studying communication is that it people become effective leaders. select the best answer from the choices provided t f