B- learning how to make fire was a long struggle for humans
Sentence one states the topic of the paragraph
Well, you didnt give much information to answer off of, but he was probably right to remain calm, because the more calm you are in a situation like that, the better capable you are to think of the correct way to go about working to fix your problem. <span />
Answer: What was it that allowed Rachel Carson to capture the public ... classic “Silent Spring” was published, its author, Rachel Carson, ... Once these pesticides entered the biosphere, Carson argued, they not only killed bugs but also made their way up the food chain to threaten bird and fish populations and ...
Explanation: