Answer:
Simple Diffusion across the Cell (Plasma) Membrane. The structure of the lipid bilayer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.
Explanation:
B. are more difficult to control than point sources. This is because A. is wrong (point source), and C. is wrong, because it doesn't necessarily cost less or more to identify the sources. D. may be right, as non point sources are natural, such as snow melts or rain.
Answer:
The individuals can also be classified on the basis of their psychology and happiness. The depressed individual remains unhappy and suffers from anxiety and enjoy the loneliness feeling.
The body dysmorphic disorder involves the situation in which individual is unable to move their body part. They are physically unfit but mentally be fit. The unhappy individual are physically fit but mentally and socially they are unfit.
It will increase (A).
When the distance between two masses becomes lower, the gravitational pull by them on each other will increase.
