Why do scientists study food chains? • Scientists study food chains to see how energy flows through organisms • Where do we get energy? • Food (plants, animals) • Where do those organisms get energy?
Producers • Organisms that make their own food • Bottom of the food chain
Consumers • Organisms that do NOT make their own food but have to find it • Primary consumers: middle of the food chain; get their energy from producers • Secondary consumers: top of the food chain; get their energy from primary consumers
Decomposers • Breaks down the soft tissues of dead plants and animals • Two types of decomposers • 1. Bacteria • 2. Fungi
Scavengers • Organisms that are too lazy to go hunt for their food
Predators • Animals that hunt
Prey • Animals being hunted
Endangered • organisms that are rare and may eventually disappear
Extinct • organisms that are gone
How do humans affect food chains? According to Terracycle, 100 species of animals and plants become extinct every week!!!
Links • http://www.sheppardsoftware.com/content/animals/kidscorner/games/foodchaingame.htm • http://studyjams.scholastic.com/studyjams/jams/science/ecosystems/food-chains.htm • http://www.ecokids.ca/pub/eco_info/topics/frogs/chain_reaction/index.cfm • http://www.sheppardsoftware.com/content/animals/kidscorner/foodchain/foodchain.htm