The direct object in the sentence <em>Exercise can increase the muscle's ability to store energy </em>is the muscle's ability (to store energy).
The main conflict in the Oscar grant case is the killing of African-American man in the early morning hours of New Year's Day 2009.
<h3>What is conflict?</h3>
Conflict serves as a disagreement between two or more parties.
Oscar Grant III who was a 22-year-old and was a tragedy on the streets of Oakland and generated much conflict.
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brainly.com/question/24769299
I would say older age people and very young children . You didn't give us opinions, so this is the best I can do.