Answer:
(B) Degradation of p35 results in increased synaptic activity.
It's empty or fairly large, making the sounds from your hands bounce of the walls and therefore having it echo
Answer:10 % I'm pretty sure
Explanation:
An error is that the scientist did not control their variables. They had one group of people playing the game at 6, and another group playing at 12. This means that other things might have affected the scores other than what was being tested, which was caffeine.