Introducing 2004 Plano ISD Plano TX Essential Question

Introducing © 2004 Plano ISD, Plano, TX

Essential Question • What is an Ecosystem and How does energy flow within an Ecosystem? Warm-up 2/13/12 • Finish filling in your Biome Chart from Friday © 2004 Plano ISD, Plano, TX

Unit Essential Question: How do organisms interact with each other the abiotic factors within the area that they live? In which direction does energy flow within the system? What happens when the flow of energy is interrupted? What happens when non-native species are introduced into an area? Lesson Essential Questions: 1. What is an ecosystem? 2. Where does the energy come from within an ecosystem? 3. How does the energy flow within an ecosystem? Lesson Essential Questions: 1. In what ways can 1. What happens species interact when with each chemicals other? naturally 2. What is leach into symbiosis? systems? Define the four 2. What happens major types. when humans introduce chemicals into the environment? © 2004 Plano ISD, Plano, TX Lesson Essential Questions: 1. What happens when an ecosystem is affect by fire or other major geologic/weat her event? 2. How might the ecosystem change? 3. What happens when humans introduce a new species into an area?

Ecosystem includes all abiotic and biotic factors in one particular environment Biotic Factors Abiotic Factors the living parts of an ecosystem the nonliving parts of an ecosystem © 2004 Plano ISD, Plano, TX

Bio Biotic Factors include plants, animals, fungi, microorganisms bio(s), bio(t) (G) root bio bio technology mechanics bio statistics feedback biot graphy sphere logy ic bio © 2004 Plano ISD, Plano, TX life

Examples of Biotic Factors © 2004 Plano ISD, Plano, TX

A Abiotic Factors include air, water, soil, temperature, wind, source of energy (usually sun) a, an (G) prefix aabiotic musia moral toxic © 2004 Plano ISD, Plano, TX not, without

Examples of Abiotic Factors © 2004 Plano ISD, Plano, TX

Examples of Ecosystems Mountains Coral Arizona Reefin. Desert in. Colorado Belize © 2004 Plano ISD, Plano, TX

Ecosystems do not necessarily have clear boundaries due to biotic and abiotic changes can change daily as things move from one ecosystem to another Biotic Abiotic migration, seed dispersal flood, erosion, drought © 2004 Plano ISD, Plano, TX

Biotic Factors interact with each other in complex such as ways also interact with abiotic factors in the ecosystem © 2004 Plano ISD, Plano, TX parasitism mutualism competition dependent upon water, minerals, temperature, light

© 2004 Plano ISD, Plano, TX

Biome a major regional or global biotic community, a super ecosystem, defined chiefly by the dominant forms of plant life and the prevailing climate © 2004 Plano ISD, Plano, TX

Major Biomes of the World desert grassland tropical rain forest deciduous forest coniferous forest tundra ocean © 2004 Plano ISD, Plano, TX

Levels of Organization living and all one all smallest group interacting organisms individual of unit large region all different nonliving populations of similar living of organs the living thing same cellsin with typical kinds things of to an organized kind working ecosystem living in plants and interacting tissues work one together area animals that within workinga includes certain together area several ecosystems cell © 2004 Plano ISD, Plano, TX

Food Chains • Producer- uses the sun to make food • Consumer- Consumes other living things for energy • Predator- Hunts other animals • Prey- is hunted • Scavenger- feeds on dead animals • Decomposer- mainly bacteria that speed up the decomposition of everything © 2004 Plano ISD, Plano, TX

How do things interact? ? Food Chains Tertiary Consumer Secondary Consumer Trophic Levels Primary Consumer © 2004 Plano ISD, Plano, TX Producer

Food Web- ALL of the individual food chains in an ecosystem © 2004 Plano ISD, Plano, TX

How does Energy in a System Flow? . 01%. 1% 1% 10% of the energy moves on, the rest is used for metabolic functions 10% 100% Energy comes from the sun © 2004 Plano ISD, Plano, TX

Work with your group to construct your own food Chain • • • What comes first? Think what would eat that? Which trophic Level comes next? Which animal would fit best? When done Have Mrs. Barkus check. After you have been approved try making a food web. © 2004 Plano ISD, Plano, TX

Compare a Food Web and Food Chain Food Web Food Chain Same 1. 2. 3. © 2004 Plano ISD, Plano, TX 1. 2. 3.