Chapter 2.2 Nutrition and Energy Flow. 2.2 Nutrition and Energy Flow  Autotroph- uses sunlight or chemical compounds to make own nutrients Ex. Plants,

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Presentation transcript:

Chapter 2.2 Nutrition and Energy Flow

2.2 Nutrition and Energy Flow  Autotroph- uses sunlight or chemical compounds to make own nutrients Ex. Plants, and some single-celled organisms like algae Also known as producers dnr.metrokc.gov/.../photos/SwimBeach005.jpgwww.cwss-scm.ca/Weeds/images/SDknotweed_flowe...

2.2 Nutrition and Energy Flow  Heterotroph- must feed on other organism to get energy/nutrients Herbivores - Carnivores – Scavengers – Omnivores - Decomposers –  Responsible for recycling nutrients jowra.com/photos/photos/grasshopper.jpgwww.mccullagh.org/.../vulture-carass-gnawing.jpg share3.esd105.wednet.edu/.../Pictures/Conks.jpg

2.2 Nutrition and Energy Flow  Flow of Matter and Energy All energy starts with sunlight. Food chain Trophic Level

2.2 Nutrition and Energy Flow Food Web- more realistic

2.2 Nutrition and Energy Flow  Pyramid of Energy Energy available is only 10% of the previous trophic level’s energy.

2.2 Nutrition and Energy Flow  Pyramid of Numbers - # of consumed organisms

2.2 Nutrition and Energy Flow  Pyramid of Biomass Biomass – total mass or weight of all living matter in a given area.