Well plants breathe carbon and let out oxygen so it cleans the air, not sure about the energy use...
Density is mass divided by volume. rho=m/v. So, v=m/rho. In frank's case this is 80/8 = 10 cm^3.
Answer:
Think of it like this potential energy is exactly what it sounds like it has potential. while kinetic energy which is what the body possesses by virtue of being in motion.
Explanation:
Ithoshpere is space sheeld. asthenosphere next sheets of sky
