My last one got deleted lol so who wants to talk on here

How is the composition of a meteorite relevant to finding out the composition of earth's core?

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

Areaction in which products can react to re-form reactants is