Question

multiple choice 1 point
the more contaminated the water, the
more positive impact on the environment.
more safe it is to consume.
more costly it is to treat.
faster it flows.
multiple choice 1 point
what is the definition of an aquifer?
a body of water that flows underground
a body of rock and/or sediment that holds groundwater
a type of soil that absorbs water
a large underground lake

Explanation:

For the second question: Contaminated water has negative environmental impacts, is unsafe to consume, and treatment cost increases with contamination. Flow speed isn't directly related to contamination level.
For the third question: An aquifer is defined as a body of rock and/or sediment that holds groundwater. A body of water flowing underground is more like a subsurface stream. Soil absorbing water is about soil properties. A large underground lake is a specific water - filled cavity, not the general definition of an aquifer.

Answer:

1. more costly it is to treat.
2. A body of rock and/or sediment that holds groundwater.