It should be a simile because the word 'like' is there.
Hope this helps!
If this were a question on my test, I'd probably go for tolerant or sentimental. I'd probably go for sentimental, because if the sentence had a more tolerant tone, it would say something like "My car isn't the greatest, but I can live with it".
Answer:
At the end of paragraph 1, when the author says “First, we must develop many different ways of putting the waste from these nuclear and chemical substances in, on, and around the earth” it helps shape the reader's perception of the text as by starting to go into more details and more ideas on poisoning the Earth.