Life Processes Life began in the ocean

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Presentation transcript:

Life Processes Life began in the ocean Organisms need water for cell processes Where does energy come from?

Photosynthesis Chlorophyll containing organisms capture sunlight They make food using sunlight, carbon dioxide, and water These organisms start food chains Coral reefs support biodiversity in warm shallow waters. Which zone does this occur? Equation?

Chemosynthesis Bacteria perform chemosynthesis using chemicals Occurs in the deep ocean along mid-ocean ridges at hydrothermal vents These organisms also start food chains http://video.nationalgeographic.com/video/hydrothermal-vents

Ocean Life Plankton- tiny marine algae and animals that drift with the currents; most float in the epipelagic zone (why?)

diatoms Jellyfish larva krill

Ocean Life Nekton- animals that swim (rather than drift) Examples? Why do they move around?

Squid Orca (killer whale) Great White shark

Ocean Life Bottom dwellers- plants, algae, and animals that live on the seafloor Called benthos Examples: kelp beds, crabs, coral, snails, clams, etc

Biological Oceanography Kelp forests exist where upwelling brings cold nutrient rich water to surface. https://www.youtube.com/watch?v=ICZsnzHY-Co

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