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.
Answer:
a volcanic eruption must have occurred nearby which scared the sea creatures away
Explanation:
most sea creatures are scared by volcanic eruption
Because they will grow really long if you don't
It's B, Most them can make or produce their own food.
