The hormone released during exercise that is linked to happiness is

Anne, an intern in a microbiology lab, was observing the characteristics of various specimens of protists. match each specimen to the category of protist to which it belongs.

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

According to the cell theory, which describes cells? a. all organisms are composed of multiple cells. b. all cells have the same structure and function. c. cells are found in everything on earth. d. living organisms are not created spontaneously