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describe upwelling.
- winds blow: moving water at surface
- movig surface water moves offshore, forced by earth's rotation
- as surface water leaves, it is replaced by nutrient ladden water welling up from the bottom
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What is the difference between the regions of the ocean and lakes? Which regions are aphotic and photic?
- ocean has the intertidal, neritic, benthic and oceanic zones. intertidal, and sunlgiht regions of the benethic, oceanic and neritic zones are photic.
- in lakes: littoral (shallow waters along the shore), limnetic (offshore and comprises of water that recieves enough light to support photosynthesis), benthic zone.
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what are wet lands distinguished by?
vegetation and water flow
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what distinguishes aquatic ecosystems?
water movement, water depth, light availability, nutrients
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what does it mean when a species is invasive?
introduced to a new area, spreads rapidly and eliminates native species
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