Answer: look up dimensional analysis prezi and précis should pop up there usually very helpful
Explanation:
The answer is; SET B
Polar molecules interact well with water because there are charged. Water molecules are partially charged (the oxygen end is partially negative while the hydrogen end is partially positive). Therefore polar molecules can interact stably with charged molecules. The hydrophobic end is non-polar and is ‘water-hating’. When mixed with water, the non-polar region clumps up into globules so they don’t interact with water.
The answer is B)Atmosphere
1st -When cells are small, the movement of food and waste can be efficiently handled by the cell membrane
