According to moh's hardness scale, your fingernail would be rated as 2.5. juan and carol are trying to identify an unknown mineral. carol can scratch the mineral sample with her fingernail. juan and carol know the mineral must be one of these four choices.

based on the scratch test, the mineral is

a) apatite.
b) calcite.
c) gypsum.
d) pyrite.

4. if a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water? a. water will move out of the cell, causing it to shrivel. b. water will move in and out of the cell at the same rate. c. water will move out of the cell, causing it to swell. d. water will move into the cell, causing it to swell.

This is a biological reaction due to a stimulus. i need this quickly !

Which of the following is the function of the nociceptors? a. detecting odors in the nose b. detecting painful stimuli c. detecting central body temperature d. detecting touch and pressure