Why does earth have a liquid water supply and the moon does not?

a. the moon does not have a magnetic field
b. earth is much colder than the moon
c. earth was bombarded with comets
d. the moon does not have strong enough gravity

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?