heat and pressure
Mass and chemical composition
chemical weathering
The two types are chemical and physical changes.
For example melting and evaporation.
breaking or creating molecular bonds -- increasing or decreasing heat energy
I would suggest temperature and pressure.
Light
All matter has mass and volume.
Liquid to gas, solid to liquid, and liquid to solid
A low birth rate and environmental hazards are two things that can cause a population to decrease.
A low Birth Rate and environmental hazards are two things that can cause a population to decrease.
Pressure and temperature are two factors that both affect the state of any type of matter.