Answer:
The answer is a. they are much like empty rooms.
Explanation:
Cells are pretty much the opposite of empty rooms. There are many organelles and processes happening in them, so there's no space for empty rooms. Even when there are spaces, which anyway would be full of liquid, these spaces have a purpose.
The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars.
if you are talking about both then the first when measures the meters in a high tide and a low tide and the bottom one shows how it has been increasingly rising and lowering
This occurs in the first stage of secondary syphilis