The answer to this problem is the "Antianxiety Drugs". This is the <span>Drugs that reduce the level of worry or tension a person experiences essentially by reducing excitability and increasing feelings of well-being. This drug makes the people stay calm and relax but this may also result in dizziness and weakness.</span>
<span>Politics and culture. </span><span>The Crusades influenced the attitude of the western Church and people towards warfare
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I think that the key point here is the "easily reproducible" - because all of them can be scientific questions (even a! it could tell us about about the human psyche!)
but d. is the best answer for a reproducible experiment. B could also make a good experiment, but it would be too expensive to be easily reproducible. C is calling for a more complex analysis that is too complex for an experiment. And a would require more questionnaires than experiments
Answer:
It is non reactive compare to the reactive gases
