Answer: C
The substance that must come through the cell membrane for the cell to live is nutrients. Cells would die if they did not get nutrients. Nutrients are what keeps the cell running.
Are you asking for the definitions?
seismic (s) waves are an elastic wave in the earth produced by an earth quake or other means
1,3,5, and 6.
<span>kidney
</span><span>bladder
</span><span>ureter
</span><span>urethra</span>
