C is the answer to question 22
Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy. ... The binding of a substrate to an enzyme active site is termed the "enzyme-substrate complex.
Answer:
to make the uniformity in the world measurement
Explanation:
means everyone could measure 1 kg in world 1 kg only in any part of world so it is bought in action of standard measurement
I believe your answer is the year 2020
