I'll give some help
if u know Country's it will be easier and if u know how the Country looks like it will make sense. Basically just read the bottom paragraph and it will make sense.
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:
Permafrost areas have very cold air temperatures, thin topsoil, and most water is frozen during the winter. ... Tundra is found at high latitudes and at high altitudes, where the permafrost has a very thin active layer. The active layer of tundra is too thin for trees to grow, because it cannot support a tree's roots.
Answer:
Ear Damage this would affect the individuals hearing aid there by making it difficult to hear clearly
The correct answer would in fact be C
