Chapter 5
The number of Earth's mass extinctions, including the current one we are in now.
What are 6 mass extinction events?
Water that accumulates in subsurface areas of rocks or sediments.
What is an aquifer?
The force exerted on or acting against something.
What is pressure?
Physical and chemical process that reduces rocks to smaller particles and that alters minerals
What is weathering?
Any biological, physical or chemical substance in which identifiable excess.
What is pollution?
The Burmese Python in Forida Everglades.
What is an invasive species?
This zone in a lentic system is found near the shore, gets relatively high light penetration, and tends to host a diversity of organisms.
What is the littoral zone?
Location of the naturally occurring ozone layer.
What is the stratosphere?
This is Earth's dipole.
What is the magnetic field?
Equal parts of sand, silt and clay.
What is humus?
The usefulness of a particular species for human purposes.
What is instrumental value?
Where fresh water meets salt water.
What are estuaries?
This type of pressure results in drier conditions.
What is high pressure?
This process changes rocks into another type due to the increased pressure and temperature
What is metamorphism (or metamorphic rock)?
These produces castings.
What are earthworms?
The cost to replace something with a substitute or artificial good.
What is replacement cost?
Sinking or collapse of the ground surface due to water draining from aquifers.
What is subsidence?
A substance that is harmful in its directly emitted form.
What is a primary pollutant?
This is the largest drainage basin in north America.
What is the Mississippi River Drainage Basin?
Water that is used to produce goods we consume.
What is embedded water?
Protected strips of land that enable migration from one habitat to another.
What is a wildlife corridor?
Paved driveways, roads, rooftops, and parking lots that divert water to storm drains.
What are impervious surfaces?
This law established air quality standards and regulations of the source of pollutants.
What is the Clean Air Act of 1970?
This soil horizon layer contains the subsoil.
What is the B horizon?
Flowing water ecosystems such as rivers and streams.
What are lotic ecosystems?