D. Both a and b because anaerobic is without oxygen. It's preforming short bursts of energy at a time.
Answer: Manipulation of the Independent Variable
Again, to manipulate an independent variable means to change its level systematically so that different groups of participants are exposed to different levels of that variable, or the same group of participants is exposed to different levels at different times.
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Researchers have concluded that there is a link between vigorous-intensityphysical activity with the risk of heart attack and sudden cardiac death within one to two hours following the activity.
No fall protection is required until 10 feet when working on scaffolds, but if someone falls into dangerous equipment or a sharp object, fall protection is required no matter what.
Which of these STIs has a vaccine to prevent it?
C. HPV
