<span>cardiorespiratory endurance</span>
1. True- because scientific theory means that <span>idea supported through research that attempts to explain existing observations or predict new ones.</span>2. False- because a cross-sectional means that its a study that is about different groups.
3. B-<span>An extraneous variable clarifies the relationship between the independent and dependent variables.</span>
C. chemical digestion. sorry if I am wrong
Answer:
no no no
Explanation:
just say no and be firm no means no
