The first and second laws of thermodynamics state that energy is neither created nor destroyed, but only changes form. With every change in form there is an increase in the disorder (entropy) of the system. 

Soil consists of mineral and organic matter, air, and water and 

Your worldview is mostly strongly shaped by

Choose the practices that help to reduce erosion

Match the following type of plant with its characteristics

The definition of invasive species is:  a non-native species (a species outside its range) whose introduction causes or is likely to cause economic or environmental harm or harm to human health

The EPA’s 2016 Action Plan to upgrade US drinking water treatment facilities estimates costs of $650 million to repair drinking water infrastructure that is too small and old.

A watershed is all the land area over which water could potentially flow and empty into a body of water is that water body’s watershed. Runoff can pick up pollutants in the watershed and deliver them to the water body.

Command and control regulation is a type of regulation that involves setting an upper allowable limit of pollution release that is not enforced with fines or incarceration

A sink is where nutrients reside for varying amounts of time and a source is when that nutrient becomes active in the system. An example of this would be a cloud is a temporary sink in the hydrologic cycle, but rain would be a source.