Fossil fuels are mostly the major source of energy
A phase change is when matter changes to from one state ( solid, liquid, gas, plasma) to another.
It’s basically that’s any system that’s closed to all transfers of matter and energy the mass of the system has to remain constant over time because they can’t change meaning you can’t add or remove from it
+molecule size +steepness of the concentration gradient +temperature + steepness of the electric gradient +steepness
Answer:
C
Explanation:
You mix different thing together to make a new thing.
