Answer:
The easiest way to test if water is acidic is to use litmus paper. Litmus paper is a paper that contains special dyes that will change color when exposed to acids or bases. In your case, if you dip blue litmus paper into water samples and it turns pink or red, then the water is acidic.
Answer:
Im not 100% sure but i think it's b. You can use the essay to boost your score with no consequences if you do poorly
Explanation:
if it's not go with a
Answer:
D. Comets spend most of their time far from the Sun.
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Answer:
The samples are not independent of each other.
Explanation: