¿Tú, un árbol, una roca, estarán compuestos de lo mismo?

How much carbon is stored in the atmosphere as co2

Which is an example of a highly unstable isotope that is often used in fission reactions?

What kind of intermolecular forces act between a hydrogen fluoride molecule and a hydrogen peroxide molecule? note: if there is more than one type of intermolecular force that acts, be sure to list them all, with a comma between the name of each force.