D, the more liquid there is, the less the temperature will be affected
Because the Earth's orbit around the sun is not in the same plane as the Moon's orbit around the Earth.
Density = mass / volume
Density = (45g) / (9 [volume units])
Density = 5g / [volume unit]
There was no specification on the units of volume. However, whatever it may be, just replace the square brackets with the value and your units will be correct.
It has the most mass. but the electron cloud takes up the most space.
B. the frogs are a limiting factor for the gnats
the frogs limit the reproduction of the gnats, and therefore with less frogs the gnat population can increase