Differences in opinion by different groups of people.
Answer: In one study, exercise stimulated the human brain's ability to maintain old network connections and make new ones that are vital to cognitive health. Other studies have shown that exercise increased the size of a brain structure important to memory and learning, improving spatial memory.
<span>A chip in a tooth or a missing tooth would be considered as individual pieces of evidence. Being separated from the human body would enable a piece of tooth to become an individual case of evidence. </span>
