Nitrogen-fixing bacteria in soil can convert excess nitrogen into , which can contaminate groundwater. A/An forms around a well when the water table begins to slope toward the well.
The water in an artesian well comes from a/an aquifer.
A well not only has to reach the but also has to go deeper.
aquifers are more prone to pollution.
The two primary components of a septic system are a septic tank and a/an .
Groundwater that comes to the surface naturally is

nitrates; cone of depression; confined; water table; unconfined; drainage field; spring.

Explanation:

Nitrogen-fixing bacteria in soil can convert excess nitrogen into nitrates, which can contaminate groundwater.

A cone of depression forms around a well when the water table begins to slope toward the well.

The water in an artesian well comes from a confined aquifer.

A well not only has to reach the water table but also has to go deeper.

Unconfined aquifers are more prone to pollution.

The two primary components of a septic system are a septic tank and a drainage field.

Groundwater that comes to the surface naturally is spring.