Which of the following are some abiotic factors of an aquatic ecosystem?

dissolved oxygen, salinity, water temperature, and chemical contaminants

What is an ecosystem?

all the organisms and the physical setting of a region

Each of the following is currently a major concern with regard to the Virginia watershed except ―

the overfilling of underground aquifers.

One activity that has a strong negative effect on our wetlands is —

a freshwater pond with eutrophication

Why are estuarine waters important for commercial fishing and shellfish harvesting?

Many species are dependent on estuaries during part of their life cycles.

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6.8 Science SOL Review

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Answers

1
Which of the following are some abiotic factors of an aquatic ecosystem?
nektons, rocks, aquatic grasses, and climate
amphibians, submerged vegetation, nutrients, nektons
dissolved oxygen, salinity, water temperature, and chemical contaminants
aquatic grasses, trees, reptiles and amphibians
2
Streams and rivers carry large amounts of sediment. Sediment is brought to streams and rivers by
gravity
sunlight
rain
erosion
3
Flowing water is slowed down in wetlands where it flows around plants. What is removed from the water in this process?
thermal pollution and smog
nutrients and pollutants
carbon and iron
oxygen and hydrogen
4
What is an ecosystem?
all the organisms and the physical setting of a region
only the producers in a given region
the physical setting of a given region
all organisms living in a given region
5
Wetlands play many essential parts in the health of watersheds. Which is not a function they do?
They provide a habitat for plants, insects, and birds.
They are spawning zones for some fish.
They filter fertilizers and pollutants.
The help reduce droughts.
6
The Chesapeake Bay is a/an —
estuary
river
lake
ocean
7
Each of the following states is part of the Chesapeake Bay Watershed except ―
Pennsylvania
Each of the following states is part of the Chesapeake Bay Watershed except
North Carolina
New York
8
Each of the following is currently a major concern with regard to the Virginia watershed except ―
the overfilling of underground aquifers.
the invasion of exotic species.
the effects of acid rain.
aquatic habitat destruction.
9
The land that water flows across or through on its way to a body of water such as a stream, river, or bay is a/an —
wetland
estuary
aquifer
watershed
10
One activity that has a strong negative effect on our wetlands is —
a saltwater wetland
a freshwater pond with eutrophication
a place where freshwater meets saltwater
planting grass and other plants to reduce erosion.
11
Why are estuarine waters important for commercial fishing and shellfish harvesting?
This is the only place where harvesting of fish is allowed.
This is the safest place to fish.
Many species are dependent on estuaries during part of their life cycles.
There are more fish in estuarine waters.
12
Each of the following is a major source of water pollution except ―
fishing industry.
urban areas.
agriculture
sewage
13
Wetlands are beneficial for ―
picnicking
water storage.
water sports.
deep water fishing.

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