Question

answer the following questions.

1. choose the best answer.

which type of activities is based on time?
anaerobic
aerobic
bone strengthening
muscle strengthening

Explanation:

Aerobic activities are endurance - based and rely on oxygen for energy over a period of time. Anaerobic activities are short - burst and do not rely on oxygen for energy in the same time - based endurance way. Bone - strengthening and muscle - strengthening activities are more about the type of physical change (strengthening bones or muscles) rather than being inherently time - based in the same sense as aerobic activities.

Answer:

aerobic