What are the "waves" of coronavirus

(drag each tile to the correct location.) categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. - a tentative statement used to guide scientific investigations. - makes predictions about future events. - can be tested by many independent researchers. - based on observations of natural phenomena. - a well-established, highly reliable explanation.

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous