If sugar concentration within a cell is high/rises, then water will enter the cell increasing the volume of cytoplasm within the cell and hence the volume/size of the cell itself;
Alternatively, if the sugar concentration within a cell is low/falls, then water leave the cell decreasing the volume of cytoplasm withing the cell and thus the cell will get smaller.
The exclusion of insects may be seen in freezing, burial, or wrapping. I<span>nsects and rodents are small and sneaky, many commercial buildings are rife with cracks, holes and other entry points that make ideal doorways for pests. I hope it helps. </span>
Question 2: Because the offspring most often will look like it's parents.
Answer: Birds pick up oil on their beaks, by rubbing against the uropygial or preen gland near the tail, and then rub it over their feathers. This makes the water unable to break through the oil.
Explanation: Hope this helps have a great day :)