Oceans
Rivers
Wetlands
Estuaries
Human Impact
100
Are Oceans freshwater or marine ecosystems?
Marine Ecosystems.
100
Are rivers part of the freshwater or marine ecosystems?
Freshwater
100
What is the function of a wetland?
Trap and filter pollutants
100
what kind of ecosystem is an Estuaries?
is a mix of both freshwater and salt water
100
What is a threat to ocean organisms?
Fishing Nets
200
Why does photosynthesis not occur in the deep ocean?
Sunlight does not reach
200
Where do rivers most likely begin?
In mountains and hills
200
How do wetlands help humans?
By the cultivation of rice
200
Why estuaries very productive ecosystems?
they constantly receive nutrients
200
What is the source of most ocean pollution?
activities on land
300
What determines the arrangement of organisms in the ocean?
sunlight and nutrients
300
Where does the amount of water come from?
direct precipitation, snow-melt, and groundwater.
300
What dominates a wetland?
Grass
300
Estuaries are constantly receiving nutrients from
rivers and oceans
300
what process is caused by the increase in nutrients?
Eutrophication
400
How much do oceans cover of the surface of the planet?
The ocean covers 70 percent
400
What is the key to water ecology?
Water Flow
400
What are the source of inflow in wetlands?
precipitation, surface flow, groundwater flow, tides
400
Most coral reefs are found in estuaries, what is a threat to coral reefs?
Temperature
400
Why are Dams bad for rivers?
Dams alter the flow, temperature and sediment in river systems. Reduced flow alters aquatic habitats, reducing or removing populations of fish, invertebrates and plants that depend on the flow to bring food.
500
What are the three layers oceans are divided into? (name them in order from the top layer, to the low layer)
euphotic zone disphotic zone aphotic zone
500
How long is the Amazon River?
4,345 miles
500
What is the purpose of hydrology in wetlands?
species richness, productivity, rates of organic matter accumulation, and nutrient cycling.
500
What are the three types of estuaries?
Tributary estuaries Trunk estuaries Back Barrier Sounds
500
What human activities affect the wetlands?
sewage plants, refineries, industry and chemical factories.
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