PLEASE HELP What is the most important inorganic compound necessary for all chemical reactions in our body to take place?

1) Water

2)lipid

3)carbohydrates

4)protein

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?