How is the arrangement of molecules in a dense object different than arrangement by molecule in a less dense object

The molecules in a dense object are tightly packed together

Explanation:

This happens because the closer molecules are the denser the object is, however, if they get too close it can be a very disastrous result and the compound becomes very unstable. Hope I could help! :)

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.