Answer:
Respiratory system
Explanation:
Like other fishes, sharks extract oxygen from water as it passes over their gills.
Dr. Blackwell caused rats to stop breathing when he lesioned their MEDULLA.
When doctor Blackwell induced a lesion in the rats' medulla, he discovered that the rats stopped breathing. He explained this observation by saying that the medulla has functional role to play in the breathing process of rats.
Answer: The main purpose of meiosis is to create gametes, or sex cells like sperm and eggs.
Explanation:
Hope I helped
Hypertonic- the water moves out of the cell
Hypotonic- the water moves into the cell
Isotonic- no water movement
