Which is made from the remains of dead plants over millions of years?
a. uranium
b. natural gas
c. oil
d. coal

Johannesburg kepler, an apprentice of brahe, believed in the heliocentric universe but rejected past astronomers belief in

If water is at -10 ° c and energy is added to the water until it is 50 ° c while maintaining a constant pressure of 760 mmhg, describe the phase change of the water?

Which chemical equation is unbalanced? which chemical equation is unbalanced