Select the word that BEST matches each definition.
a layer of rocks and soil above the water table in which the pores contain air as well as water
A process by which the nutrients phosphorus and nitrogen become very dense in a body of water, leading to increased growth of organisms such as algae.
The area of permeable rock or soil in which the cracks and pores are totally filled with water.
Breakup of a habitat into smaller pieces, usually as a result of human activities.
Weathering, erosion, and plate tectonics that occur at different rates and in different places.
A natural barrier such as a ridge of land that separates one watershed from another.
The underground zone where soil or rock is saturated with water.
Plants, such as rye, alfalfa, or clover, that can be planted immediately after harvest to hold and protect the soil from erosion.
Area of land that drains rainwater or snow into one location such as a stream, lake or wetland.
Water that is stored below Earth’s surface in soil and rock layers.