can someone please help me with my science test, for free (8th grade)? there's 15 questions, mostly about weather. it would mean the world !!

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

The solid that is formed and usually sinks to the bottom of a solution is the