What would be the best technique to separate an insoluble solid from an liquid, like sand from water

Motivation cannot be developed with practice; a person either possesses it or they do not.

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3 -> a2cr(no3)3 + a3ag2so4

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?