From the deepest to most superficial: pia mater, arahnoid, dura mater
I swear it's the cell membrane.. I'm not sure though
Answer:
answer is asteroids and comets
Explanation:
Planets and Meteors: a planet is far larger than a meteor
Moons and Meteors: a moon is larger than a meteor
Comets and planets: a planet is far larger than a comet
Simple handwashing is more than enough to stop the spread of infectious diseases. The hands play a major role in spreading pathogens because it can come into contact with infected surfaces. Make sure to wash your hands especially when they get soiled or before you eat or drink.
A cells relatively constant internal physical and chemical conditions are called Homeostasis.
