You and a friend got lost in a desert . luckily , someone told you of a place where the water table is so close to the surface , that water sometimes flows from beneath ground . what might this source of water be ? a) glacier b) spring c) stream d) all of the above

Nerve cells are specialized to respond to stimulitrue or false?

How many chromosomes does each human cell contain? a. 23 chromosomes b. 26 chromosomes c. 43 chromosomes d. 46 chromosomes

The model illustrates a process by which a substance is taken up by a cell. which statements describe the process? a. the model shows the process of endocytosis. b. the process shown in the model requires energy from the cell. c. the cell membrane in the model remains intact throughout the process. d. the model shows the process of facilitated diffusion.