Answer:
All cells are surrounded by a cell membrane. The cell membrane is semipermeable, allowing some substances to pass into the cell and blocking others.
Explanation:
Yes it is an example of friction.Also a sled sliding across the snow or ice
Bristles on a crayfish help them catch food
<span>Because it is an opioid, hydromorphone is classified as a Schedule II drug. Hydromorphone, which is derived from morphine, is also called dihydromorphinone, and is sold under various brand names. One of the most common brand names for this drug is Dilaudid.</span>
