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There are two main types of exercise: (1) exercise, which uses oxygen for energy, and (2) exercise, which does not.

a)
1= anaerobic, 2= aerobic

b)
1= aerobic, 2= anaerobic

User Soni Kumar
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2 Answers

1 vote

Answer:

B

Step-by-step explanation:

User Wsn
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10 votes

Answer:

b

Step-by-step explanation:

User Mike Kovetsky
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