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- 1. Multiple Choice
Which aquatic ecosystem is found where the freshwater rivers meet the ocean?
ocean
estuary
lake
pond
- 2. Multiple Choice
The mixture of saltwater and freshwater in an estuary is called __________________ water.
brackish
semi-salty
partially-salty
sorta-salty
- 3. Multiple Choice
All of the following are examples of freshwater ecosystems EXCEPT ________________.
ponds
Estuaries
lakes
rivers
- 4. Multiple Choice
Bryson is comparing two different ecosystems and creates the following list of similarities: aquatic, diverse fish life, high salt concentration, plentiful light at the water's surface. Which two ecosystems is Bryson most likely comparing?
ocean and lake
estuary and ocean
grassland and pond
- 5. Multiple ChoiceOrganisms in estuaries must be able to survivefrequent dry conditionshigh windschanging salt levels
- 6. Multiple Choice
Pond/Lake Plants
mangrove, sea rush, oioi, jointed rush
water lilies, algae, cattails
mallard duck, crayfish, snapping turtle
coralline algae, phytoplankton
- 7. Multiple Choice
This word is used to describe living parts of an ecosystem
Abiotic
Terrestrial
Aquatic
Biotic
- 8. Multiple Choice
Which of the following best describes turtles, algae, fish and beavers?
Biotic factors found in lakes and ponds
Abiotic factors found in lakes and ponds
Biotic factors found in grasslands
Abiotic factors found in forests
- 9. Multiple Choice
Swamps, marshes, and rivers are all examples of ____________ ecosystems.
Saltwater
Oceans
Freshwater
Tropical Rainforest
- 10. Multiple Choice
Why do most aquatic plants live near the edge of a pond or float on its surface?
for water and sunlight
for fish and humans
for frogs homes and food
cleans bacteria and swimming
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