Which is true about scientific theories? (2 points)
They are the result of a single experiment.
They are the results of many experiments over a long period of time.
They are proposed by scientists who wish to investigate a new topic.
They are only based on the most recent evidence.

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.

what subject is this

it would be rhyolitic hope this