The correct answer is that some of the sand originayed from the sea-cliff rock itself.
Vertified.
Happy Science!
Vaccines are made up of dead or weakened pathogens that are stripped of their ability ..
so answer is in a vaccine
a cell is the smallest structural and functional unit of an organism
Answer:1.) solute too large for channels
2.) solute not lipid soluble
3.) solute not able to move down concentration gradient.
