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.
Answer:
Evolution explains how life on Earth diversified.
Explanation:
Evolution is the process of change in characteristics in a species to better fit their environments.
So, because it changed the characteristics of life over time, evolution helps to explain how life on Earth diversified.
Evolution does not explain why Earth can support life, how it began, or how fossils formed. Rather, it simply just explains how living things changed over time.
Answer:
Explanation:
5 Reasons the World is Running Out of Freshwater
Increased Food Requirements of a Growing Population. ...
Increased Energy Requirements by a Growing Population. ...
Increased Frequency of Droughts. ...
Groundwater is Being Pumped at Unsustainable Rates. ...
Inadequate Water Infrastructure.