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MATCHING - In the space provided, write the letter of the term or phrase that best matches the description.
______ 1. wetland dominated by nonwoody plants______ 2. precipitation that can carry pollutants into aquatic ecosystems______ 3. amount of dissolved salts in water______ 4. wetland dominated by woody plants______ 5. area where fresh water mixes with salt water______ 6. limestone ridges built by tiny animals______ 7. located near the bottom of a pond or lake______ 8. organisms that break down dead organisms______ 9. increase in nutrients in an aquatic ecosystem______10. aquatic zone found near the shore______11. threat against a river ecosystem______12. threat against marine organisms a. swampb. benthic zonec. damsd. decomposerse. littoral zonef. eutrophicationg. overfishingh. salinityi. runoffj. marshk. coral reefsl. estuary
MULTIPLE CHOICE - In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question.
______13. Estuaries are productive ecosystems because they constantly receive nutrients froma. rivers and oceans.b. coral reefs.c. lakes and ponds.d. photosynthesis.
______14. Which of the following is a factor that influences where an organism lives in an aquatic ecosystem?a. sunlightb. nutrient availabilityc. temperatured. all of the above
______15. In which of the following aquatic ecosystems are both littoral and benthic zones most likely found?a. open oceanb. coral reefc. laked. none of the above
______16. What is the source of most ocean pollution?a. activities on landb. climate changesc. aquatic animalsd. none of the above
______17. Estuariesa. are always saltwater ecosystems.b. are always freshwater ecosystems.c. are ecosystems where both fresh water and salt water are present.d. prevent the development of salt marshes.
______18. All of the following are examples of saltwater ecosystems excepta. mangrove swamps.b. coral reefs.c. salt marshes.d. the Florida Everglades.
______19. One way in which wetlands control flooding is bya. filtering out water pollutants.b. absorbing water from rivers.c. providing habitats for migratory wildlife.d. reducing the amount of carbon dioxide released into the air.
______20. Which of the following is not a threat to coral reefs?a. silt runoffb. excessive nutrientsc. growth of algaed. zooplankton
______ 1. wetland dominated by nonwoody plants______ 2. precipitation that can carry pollutants into aquatic ecosystems______ 3. amount of dissolved salts in water______ 4. wetland dominated by woody plants______ 5. area where fresh water mixes with salt water______ 6. limestone ridges built by tiny animals______ 7. located near the bottom of a pond or lake______ 8. organisms that break down dead organisms______ 9. increase in nutrients in an aquatic ecosystem______10. aquatic zone found near the shore______11. threat against a river ecosystem______12. threat against marine organisms a. swampb. benthic zonec. damsd. decomposerse. littoral zonef. eutrophicationg. overfishingh. salinityi. runoffj. marshk. coral reefsl. estuary
MULTIPLE CHOICE - In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question.
______13. Estuaries are productive ecosystems because they constantly receive nutrients froma. rivers and oceans.b. coral reefs.c. lakes and ponds.d. photosynthesis.
______14. Which of the following is a factor that influences where an organism lives in an aquatic ecosystem?a. sunlightb. nutrient availabilityc. temperatured. all of the above
______15. In which of the following aquatic ecosystems are both littoral and benthic zones most likely found?a. open oceanb. coral reefc. laked. none of the above
______16. What is the source of most ocean pollution?a. activities on landb. climate changesc. aquatic animalsd. none of the above
______17. Estuariesa. are always saltwater ecosystems.b. are always freshwater ecosystems.c. are ecosystems where both fresh water and salt water are present.d. prevent the development of salt marshes.
______18. All of the following are examples of saltwater ecosystems excepta. mangrove swamps.b. coral reefs.c. salt marshes.d. the Florida Everglades.
______19. One way in which wetlands control flooding is bya. filtering out water pollutants.b. absorbing water from rivers.c. providing habitats for migratory wildlife.d. reducing the amount of carbon dioxide released into the air.
______20. Which of the following is not a threat to coral reefs?a. silt runoffb. excessive nutrientsc. growth of algaed. zooplankton
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