How does groundwater become polluted? A.) It is not possible for groundwater go be polluted
B.) Factories dump their waste directly into aquifers
C.) Refuse infiltrates the water table when garbage is dumped
D.) Through the tilling of the land
E.) Pollutants mixed with water pass through permeable layers above the aquifer

Thayer sometimes finds it difficult to understand what his instructor is saying. he raises his hand in class and asks his instructor to elaborate on what was just said, but it rarely . what should thayer do to overcome this obstacle? a. during class, ask other students what the instructor means b. raise more questions in class c. join a study group of his peers d. try to do the best he can with the information he has