What kinds of sources are considered reliable for answering research questions about a scientific topic?

Why is “playing it cool” laced with irony for starr? the hate u give

Based on the cause-and-effect relationship in this sentence, what is the meaning of the word illuminate? the colors and patterns on the stained glass windows were illuminated as thousands of candles burned during the special church service. a) to melt or change form b) to grow taller or wider c) to become extremely hot d) to light up or make clear

Urgently need to do with 1-20. you very much!