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MATCHING - In the space provided, write the letter of the term or phrase that best matches the description.
______ 1. potential threat to an estuary______ 2. ecosystem found in shallow, tropical seas______ 3. marine ecosystem considered not productive______ 4. organism that anchors itself to grasses or rocks______ 5. base of marine food web a. barnacleb. planktonc. open oceand. runoffe. coral reef. MULTIPLE CHOICE - In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question.
______ 6. Organisms that live in estuaries must adapt to changes ina. temperature and precipitation.b. sunlight and nutrients.c. oxygen and pollutants.d. water level and salinity.
______ 7. Why doesn’t photosynthesis occur in deep ocean water?a. The water temperature is too cold.b. There is no sunlight.c. There are not enough nutrients.d. The salinity level of the water is too high.
______ 8. In estuaries, fresh water and salt water mix, forming a(n)a. algal bloom. c. coastal boundary.b. habitat for shellfish. d. nutrient trap.
______ 9. Most of the nutrients in an arctic ecosystem come froma. melting ice. c. sunlight.b. the ocean. d. lakes.
______10. The majority of marine organisms are found ina. deep ocean waters.b. shallow, coastal waters.c. hydrothermal vents.d. salt marshes.
______ 1. potential threat to an estuary______ 2. ecosystem found in shallow, tropical seas______ 3. marine ecosystem considered not productive______ 4. organism that anchors itself to grasses or rocks______ 5. base of marine food web a. barnacleb. planktonc. open oceand. runoffe. coral reef. MULTIPLE CHOICE - In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question.
______ 6. Organisms that live in estuaries must adapt to changes ina. temperature and precipitation.b. sunlight and nutrients.c. oxygen and pollutants.d. water level and salinity.
______ 7. Why doesn’t photosynthesis occur in deep ocean water?a. The water temperature is too cold.b. There is no sunlight.c. There are not enough nutrients.d. The salinity level of the water is too high.
______ 8. In estuaries, fresh water and salt water mix, forming a(n)a. algal bloom. c. coastal boundary.b. habitat for shellfish. d. nutrient trap.
______ 9. Most of the nutrients in an arctic ecosystem come froma. melting ice. c. sunlight.b. the ocean. d. lakes.
______10. The majority of marine organisms are found ina. deep ocean waters.b. shallow, coastal waters.c. hydrothermal vents.d. salt marshes.
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