it" in paragraph 1 refers to ____.,,,,fossil fuels|the environment|==renewable energy|electricity">
13
" in paragraph 2 could be best replaced by ____.,,,,limited|==infinite|renewable|temporary">
21
in paragraph 3 is CLOSEST in meaning to ____.,,,,==irregular|constant|continuous|beneficial">
32
" in paragraph 1 is closest in meaning to:,,,,unnecessary|==essential|optional|separate">
37
anomalies" in paragraph 3 could be best replaced by:,,,,==errors|patterns|transactions|uncertainties">
39