The rapid growth of the human population during the last two centuries is indirectly responsible for which environmental concern, that in turn, will lead to future species extinction? a). ozone depletion. b). habitat fragmentation. c). decreased biodiversity. d). fossil fuel consumption

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.

Draw the conjugate acid for the following base. remember to include charges and non-bonding electrons where necessary.

Asample of digestive juice was removed from the stomach of a pig. the juice was placed in a test tube along with some grains of wheat. a second test tube was set up containing an equal number of wheat grains, with distilled water rather than digestive juice. the test tubes were kept for 8 hours at 40 degrees c. after 8 hours, the grains inside the digestive juice had broken into tiny particles. the grains of wheat, in the water, were wet but otherwise unchanged. what is the control group?