Answer:
C
Explanation:
They say it is CO to chemists, however that is just thier opinion and it is not proven that is is CO to all chemists.
<span>The more genteel members of the company, fearing that the Pardoner will tell a vulgar story, ask the Pardoner for a tale with a moral. The Pardoner then explains to the pilgrims the methods he uses in preaching. His text is always "Radix malorum est cupidatis" ("Love of money is the root of all evil").</span>
Answer:
Difficulty
Explanation:
Space exploration was the last thing the world could have thought of dabbing into because the idea of moving away from the earth and flying in the sky wasn't even an easy one for man, hence the difficulty attached with going into other planets was a big success.
Many trials were made before the eventual success experienced, this many difficulties man overcame is what is meant by barrier in this sense.
