In which phase (state) do most earth materials have their greatest density?

Asap! how does the distance between two objects affect the force of gravity? how is the moon dependent on the sun?

What kind of seafood would you expect to have the highest levels of mercury and why? kelp, because they use the sun to photosynthesize on the bottom trophic level. oysters, because they filter feed on plankton on a lower trophic level. small fish, because they eat plankton on a higher trophic level. sharks, because they feed on organisms on a higher trophic level.

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?