To test acidity levels of water, scientists test ph. as acid rain falls, the ph level of the water in lakes and streams decreases. while certain animals can tolerate low ph levels, others are extremely sensitive to the effects of acid rain and cannot live under these conditions. candice is working on a project to determine whether acid rain is causing a decrease in the number of bass and mayflies in a lake in her hometown. candice takes a sample of the ph level of the lake, and she finds that the ph level is 5.4. what might candice predict as a result of her findings

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism

18. determine whether each stateme blank space given. ach statement is true (t) or false (f). place your answer in the 8. when a cell is put into an isotonic solution, individual wat put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane. d. when a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell. c. when a cell is put into a hypotonic solution, there is a net movement of water molecules across the cell membrane out of the cell. d. the movement of any solvent across a semi-permeable membrane is called osmosis. e. carrier proteins have the ability to change shape and physically move molecules across the cell membrane. f. in facilitated diffusion, the concentration of the molecules to be moved across the cell membrane is higher inside the cell.