This type of organism breaks down dead material in an ecosystem.

a. herbivore
b. producer
c. omnivor
d. composer

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the

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.