Answer:
<em>C. the nation, and since then,</em>
Exclamation: If you're joining two sentences together you need a comma to do so. By placing a comma after "nation" and "then" you are making a run-on sentence.
Answer: Humans in my opinion are curious about everything, we need to know everything about our reality to feel safe. this is why we are so intrigued to find and know everything about every animals.
I know he beats up Johnny I am trying to remember the page number..... I just know that’s its somewhere between chapters 3 and 4, if that helps.
Answer:
A. Einstein's theory led scientists to discover black holes.
B. Thinking of space as blanket-like changed how scientists viewed gravity.
D. Newton and Einstein both had theories about gravity that worked.
Explanation: