in the earth's atmosphere is made up about approximately 78 percent nitrogen and 21 percent oxygen.
Answer:
The help determine age, gender, race, and height
Activation energy is the minimum quantity of energy that the reacting species must possess in order to undergo a specified reaction.
for example , striking a match on the side of a matchbox provides the activation energy, in the form of heat produced by friction.
I think it’s D i hope i’m right
