- 1. The Acheloos River is the second longest river in Greece. Its delta is a significant ecological area. What is the primary ecological characteristic of the Acheloos River delta?
A) Volcanic activity
B) Wetlands and marshes
C) Arid desert
D) High mountain peaks
- 2. The Acheloos River delta is located in which part of Greece?
A) Western mainland
B) Southern Peloponnese
C) Northern mountains
D) Eastern islands
- 3. What is a major environmental concern impacting the Acheloos River delta?
A) Excessive rainfall
B) Tsunami threats
C) Water abstraction for irrigation
D) Volcanic eruptions
- 4. The Acheloos River delta is an important habitat for which type of wildlife?
A) Arctic foxes
B) Tropical monkeys
C) Migratory birds
D) Desert lizards
- 5. Which of the following is a common land use in the areas surrounding the Acheloos River delta?
A) Agriculture
B) Urbanization
C) Mining
D) Logging
- 6. The Acheloos delta is known for its unique geological formation. What is this formation?
A) Alluvial plain
B) Glacial valley
C) Canyon
D) Karst landscape
- 7. What is the main source of freshwater for the Acheloos River delta?
A) Desalinated seawater
B) Geothermal springs
C) Rainfall and snowmelt from mountains
D) Underground aquifers
- 8. The ecosystem of the Acheloos delta is sensitive to changes in water flow. What can happen if the water flow is significantly reduced?
A) Increased biodiversity
B) Formation of new islands
C) Expansion of forests
D) Salinity intrusion and habitat degradation
- 9. Which European environmental designation recognizes the ecological importance of the Acheloos River delta?
A) Natura 2000 site
B) National Park status
C) Biosphere Reserve
D) UNESCO World Heritage site
- 10. The sediment carried by the Acheloos River plays a crucial role in maintaining the delta. What does this sediment do?
A) Builds and nourishes the delta land
B) Pollutes the water
C) Causes soil infertility
D) Erodes the coastline
- 11. Which of the following is a threat to the plant life in the Acheloos River delta?
A) Invasive species
B) Soil erosion
C) Cold temperatures
D) Heavy rainfall
- 12. The Acheloos River delta is an important site for birdwatching. Which type of birds are particularly abundant there during certain seasons?
A) Birds of prey
B) Desert birds
C) Forest birds
D) Waterfowl
- 13. What is the name of the body of water that the Acheloos River flows into at its delta?
A) Ionian Sea
B) Adriatic Sea
C) Aegean Sea
D) Mediterranean Sea
- 14. The delta's ecosystem provides a nursery ground for many marine species. Which important marine life form benefits from this?
A) Whales
B) Fish
C) Sharks
D) Dolphins
- 15. Historically, the course of the Acheloos River has changed. What has been a major factor in this change?
A) Tectonic plate movement
B) Volcanic activity
C) Natural deposition of sediment
D) Glacial erosion
- 16. What human activity can lead to the loss of deltaic wetlands?
A) Drainage for construction or agriculture
B) Restoring natural habitats
C) Planting native trees
D) Creating artificial lakes
- 17. The vegetation in the Acheloos delta is adapted to what type of conditions?
A) Arid climate
B) Waterlogged soil and brackish water
C) Dry, sandy soil
D) High altitudes
- 18. Which of the following is a direct consequence of dam construction upstream on the Acheloos River?
A) Reduced sediment flow to the delta
B) Enhanced biodiversity in the delta
C) Stabilization of the delta coastline
D) Increased freshwater flow to the delta
- 19. The Acheloos River delta plays a role in coastal protection. How does it contribute?
A) Acts as a natural buffer against erosion
B) Increases coastal erosion
C) Forms a steep cliff face
D) Diverts ocean currents
- 20. What is a significant socio-economic benefit derived from the Acheloos River delta area?
A) Nuclear power generation
B) Industrial manufacturing
C) Mining operations
D) Fisheries and aquaculture
- 21. The ecological health of the Acheloos delta is closely linked to the health of which specific marine ecosystem?
A) Open ocean gyres
B) Deep-sea trenches
C) Seagrass meadows
D) Coral reefs
- 22. What type of soil is characteristic of the Acheloos River delta?
A) Volcanic soil
B) Sandy soil
C) Clay soil
D) Alluvial soil
- 23. The Acheloos River delta faces challenges from coastal erosion. What is a primary cause of this erosion?
A) Increased freshwater input
B) Planting of coastal vegetation
C) Natural deposition of sand
D) Reduced sediment supply from the river
- 24. Which of the following is a protected area within or adjacent to the Acheloos River delta, aimed at conserving its biodiversity?
A) Pindus National Park
B) National Park of the Echinades Islands
C) Samaria Gorge National Park
D) Olympus National Park
- 25. Conservation efforts in the Acheloos River delta often focus on managing which critical resource?
A) Freshwater availability
B) Seawater temperature
C) Air quality
D) Wind patterns
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