Answer: a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
Explanation:
The answer is A.<span>
The use of water to extract oil from underground</span>
Idk I’m sorry I hope you get it right tho
In total, the plague may have reduced the world population from an estimated 450 million down to 350–375 million in the 14th century.
They would usedarker shades! Hope this helps :D