Answer:
Porosity
Explanation:
Something that is permeable allows liquid or air to pass through it
Non Porous means doesn't allow liquid or air to pass through it, porosity is the opposite of this and allows liquid or air to pass through it.
Answer:
Second option.
Explanation:
Kepler's Third Law: the squares of the orbital periods of the planets are directly proportional to the cubes of the semi-major axes of their orbits.
Answer:
C. Notice build-up of dirt or grime on the windows
Explanation:
Answer:
I do know I just want the points