Answer:
i think its false, i checked wikipedia and it says that he thought the sun revolved around a "central fire"
Explanation:
Answer:
no problem is the first time since I am now in number of people who are you doing today is a day off
Jet streams are fast moving air currents much like how a river is a fast moving water current so the answer is jet streams.
Answer: D) By decreasing the activation energy of a reaction
A catalyst is a substance that speed up the rate of chemical reaction without affecting the product of the reaction. They only affect the rate of reaction not the yield of reaction.
Catalyst provide an alternative reaction pathway that has lower activation energy than that of uncatalysed reaction. It increases the frequency of collision and because of these greater collision which lowers the activation energy of the reaction.
