Chapter 5 How ecosystems work.

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Presentation transcript:

Chapter 5 How ecosystems work

Section1: Energy Flow in Ecosystems Use sunlight in photosynthesis Plants, algae, and some bacteria capture solar energy Make carbohydrates (energy + H2O + CO2) Used by organism and transferred when eaten Used to move, grow, digest, and reproduce * Life Depends on the Sun

Section1: Energy Flow in Ecosystems Producer makes own food = autotrophic Consumer gathers energy from other organisms = heterotrophic * Producers to Consumers

Section1: Energy Flow in Ecosystems In a Hydrothermal Vent (opening under ocean floor) No sunlight; no photosynthesis; bottom of ocean Bacteria make food from hydrogen sulfides escaping from mantle Ecosystem built from these autotrophs * Exception to the Rule

Section1: Energy Flow in Ecosystems Class Chart * What Eats What?

Section1: Energy Flow in Ecosystems Opposite of photosynthesis Breaking down food using Oxygen Excess energy is stored * Cellular Respiration

Section1: Energy Flow in Ecosystems Marsh Mallow Lab Why is a pyramid used? What do primary, secondary, and tertiary mean? Why does only 10% transfer? * Energy Transfers