Watersheds
This is the land area where water drains into one main river or body of water.
Watershed
The Chesapeake Bay is this type of ecosystem where freshwater mixes with saltwater.
Estuary
A fish population, tree, or fungus would be an example of this type of factor.
Biotic Factor
High dissolved oxygen, pH 6.5–8.5, and a diverse macroinvertebrate population indicate this.
Good Water Quality
These two factors make up an ecosystem
Biotic and Abiotic
The mountains that separate two major watersheds, such as the Chesapeake Bay and the Mississippi River.
Divide
The James River watershed is part of this larger watershed.
The Chesapeake Bay
An example of an abiotic factor that influences organisms in a salt marsh.
Water
Rainfall causes this process that carries toxic heavy metals from soil into lakes and streams.
Runoff
Wetlands provide these two resources that benefit living organisms.
Food and Shelter
This is the source or beginning of a river, often found in the mountains or hills.
Headwaters
Virginia’s watersheds eventually drain into this major body of water.
The Atlantic Ocean
Large blooms of algae block this abiotic factor from reaching lake bottoms.
Light
This type of pollution comes from a single, identifiable source, like a factory pipe or sewage outlet.
Point Source Pollution
A wetland with trees and woody plants is called this.
Swamp
The Ohio, Missouri, and Arkansas Rivers are examples of this type of river connected to the Mississippi. (Smaller streams connecting to larger streams)
Tributaries
This U.S. state is not part of the Chesapeake Bay watershed:
West Virginia, Virginia, New York, Tennessee
Tennessee
Temperature, light, and pH levels are examples of this type of factor.
Abiotic Factors
A family owns a vacation cabin located on a hillside below a gas station with a leaking gasoline storage tank. In which situation is the drinking water for the cabin most likely to be contaminated?
A. Water is pumped to the cabin from a distant reservoir.
B. Groundwater is drawn up in buckets from a private well.
C. The family brings several gallons of bottled spring water.
D. The family collects water in rain barrels left in the open air.
B. Groundwater is drawn up in buckets from a private well.
This type of wetland, often tall and grassy, helps trap sediments in a wetland.
Marsh
When a river slows as it enters a larger body of water, it deposits sediment that can form this landform at its mouth.
Delta
The Chesapeake Bay is an estuary. How does an estuary act as a nursery for marine animals that spend much of their lives in deeper water?
It protects them from predators.
It protects them from heat and sunlight.
It provides water of higher salinity than ocean water.
It provides an environment that has more carbon dioxide.
It protects them from predators
How do light, temperature, and soil composition influence the components of a watershed?
They determine the types of plants and animals in the ecosystem.
Which of these features belong in a model of how salt used to melt ice on roads can damage the environment?
1. roadside soil and plants
2. nearby lakes and streams
3. underground water system
4. wells for drinking water
5. All of the above
All of the above
These wetlands have acidic, nutrient-poor soil and are often covered in moss.
Bog