Answer:
The answer is the catalyst is consumed by the reaction, so none remains at the end of the reaction.
Explanation:

yeh American server h yha koi tumahri hindi nhi samjhega-,-..xD
4 mps increase in 10 seconds = 2 mps increase in 5 seconds = .4meters/2sec
Genetic variation is advantageous because it enables some individuals and, therefore, a population, to survive despite a changing environment.