Answer:
movement corridors
Explanation:
Animal movement corridors are elongated, naturally vegetated parts of the landscape used by animals to move from one habitat to another.
This question has a two part answer. The first part is that an asteroid hitting the earth and the second part is massive volcanoes erupting around the world.
Did you ever figure out the answer?
Ph in ground water ranges from 6.5 to 8.5 any higher would be low-quality so the answer would most clearly be Low levels of fecal coliform.