In american sign language the sign space which represents the past is

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.`

When asking a question people often change their at the end

Tu es venalicius; tu servos in foro (vendo,vendis,vendit)