Which characteristic is shared by all adult amphibians and reptiles? a. they are covered with scales that prevent water loss. b. they have hearts with multiple chambers. c. they have thin skin that allows gas exchange. d. they begin their lives as larvae that hatch from eggs.

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

Which part of the cell is affected by the movement of molecules through diffusion, osmosis and active transport?

If there is another new infectious disease somewhere in the world, what do you think canadian officials should do