Medulla Oblangata is the part of the brain that controls your heart beat
Answer:
I dont know and just write it for loginign brainly
Isotonic cells stay the same hypertonic the cells shrink and hypotonic the cells grow or swell
The answer to your question is true
Natural selection is when certain environmental qualities cause a species to evolve in order to survive in the environment. Natural selection is a specific part of that, when some of the variations of the species die off because they can't survive, then the ones who survive live to create more living babies with the qualities that allow them to survive in the environment.
