Challenge: the total of the o 2 and co 2 in the test tubes always stayed the same. why do you think this is? (hint molecules of carbon dioxide, co 2 , are made of carbon, c, bonded together with two molecules of oxygen, o.)

carbon

explanation:

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

i hope this you

its true i dont know very sorry b much < 3 big fan

explanation: