Is this a question? or is this something your just saying?
Answer:
Cause/effect
Explanation:
Industrial Pollution is the cause whilst the effect is lung cancer....
Answer:
the topic would be medium of exchange and the main idea is basically the author's message about the topic, it can be expressed directly or implied. So in this case the main idea would be that medium of exchange have changed their ways of trading or bartering for the better making it way easy.
hope i helped, if i didn't i'm sorry and good luck! :)
Answer:
The guard was carrying a gun, in case one of the prisoners would try to escape.
<em>hope it helps</em>
