Answer:
c. Giraffes that stretch their necks more than other giraffes will have babies with longer necks.
Explanation:
Giraffes that stretch their necks will not have babies with longer necks. A trait only shows in next generation if it is genetically inherited i.e. the gametes carry the trait to the next generation.
When giraffes stretch their necks, they are modifying their actions in their life time which will have no effect on the gametes. Hence, this trait wont be passed to the next generation and babies will not have longer necks.
Passive Transport: Simple Diffusion
Diffusion across a cell membrane is a type of passive transport, or transport across the cell membrane that does not require energy. Remember that the cell membrane is a phospholipid bilayer. Although the inside and the outside of a cell are both water-based, there is a hydrophobic region in the middle, and this is an important barrier to anything large, charged, or hydrophilic. Molecules that are hydrophobic, just like the hydrophobic region, can pass through the cell membrane by simple diffusion.
Therefore, simple diffusion is the unassisted passage of small, hydrophobic, nonpolar molecules from a higher concentration to a lower concentration. Very small molecules can slip through the cell membrane, too, even if they are hydrophilic - just like a few ants might crawl through a crack in the wall just because they're tiny.
Your skin gets damaged to prolong exposure to U.V. Resulting in darkening of the skin
Answer:
hopefully its a. compound
Explanation:
