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- 1. Multiple ChoiceWhich will result if there is increased upwelling in a coastal area?more aquatic lifeless nutrients in the waterhigher water temperaturesfewer nitrates
- 2. Multiple ChoiceWhy is water from an aquifer more likely to be cleaner than water from other sources?because it forms where fresh and salt water meetit receives water directly from precipitationit rises to the surface near the oceanpollutants are filtered by rock and soil deep within earth
- 3. Multiple ChoiceIn which oceanic zone do clams and crabs survive by burrowing in the sand?oceanicintertidaldeep oceanopen ocean
- 4. Multiple ChoiceWhich best describes characteristics of a river basin?the land drained by a river and its tributariesthe land formed when rivers create estuaries and marshesthe land at the mouth of a river where water flows into the oceanthe land formed as a result of a river flooding
- 5. Multiple ChoiceWhich technology is most efficient in mapping large areas of the ocean floor?sonarsatellite imagingrobotsdepth guage
- 6. Multiple ChoiceDeep ocean technology has discovered organisms in hydrothermal vents that do not rely on sunlight to survive. What do these organisms use as their energy source?chemosynthesiselectrical chargehydropowerthermal heat
- 7. Multiple ChoiceWhich factors limit the productivity of a marine ecosystem?availability of light and nutrientsavailability of nutrients and fresh wateravailability of light and chemosynthetic organismsavailability of photosynthetic organisms and fresh water
- 8. Multiple ChoiceWhich groundwater contaminant contained in fertilizers and pesticides comes from farms?bacteriamercurynitratessodium
- 9. Multiple ChoiceWhich is the main source of dissolved oxygen in the ocean?underwater earthquakesdecay of living organismsanimals that live near the surfaceplants and algae that live near the surface
- 10. Multiple ChoiceWhich is the effect of too much nitrogen and phosphorus in a lake?algal bloomsgreater salinitydecreased turbiditylower temperature
- 11. Multiple ChoiceWhich of the following is a bio-indicator?currentinsectrockwater
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