Answer:
A. tornado
Explanation:
A spill and pollution are man-made and preventable. A natural disaster is neither of those.
I believe it’s A. Birth control patch
Answer:
is a blind, neutral experiment
Explanation:
In Science, to have results in which you can trust, always need to be a comparative ( in this case the creatinine supplementation and the other powder). To be a serious experiment, need to have the same activities, duration and the participants need to "blind" to know which substance they are really taking, so they need to train as usual, and after some time the results will show if there is a significant difference.
Hey ...
The answer is D. He is using muscular strength.
Hope this helps!
They may become pregnant or get a Std(Sexually transmitted disease)
