How does a catalyst influence a chemical reaction? It speeds up or slows down a chemical reaction by direct participation.
It reacts with products to increase the concentration of reactants.
It decreases the amount of energy necessary for the reaction to proceed.
It increases the total amount of products formed.

It decreases the amount of energy necessary for the reaction to proceed.

Explanation:

To be honest I saw it under the other person's comments when they put the wrong answer choice.

i'd say that the moon rock is about 2.2 billion years old.

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.