How to draw a food chain Show video
- Slides: 12
How to draw a food chain Show video link or use the attached slides for instructional support! https: //diy. org/skills/biologist/challenges/358/draw-a-food-web
Ecologist study nature by observing and testing the energy flows of ecosystems Food chain: Shows the ONE directional flow of energy in a system
Food Web • Shows the MULTIDIRECTIONAL flow of energy in a system
Energy…. What is it? • How do living things get energy? • How do living things use the energy the obtain? Molecular energy (creating and breaking chemical bonds) • How does energy cycle through an ecosystem?
Varieties of metabolism Some organisms are able to make or synthesize energy (food) from light or chemicals Auto: Self Feeder Plants Troph: Feeder Algae Autotrophs: Any organism that can convert inorganic molecules into energy. Some Bacteria
Varieties of metabolism Some organisms obtain energy by consuming other organisms Hetero: another or different Birds Troph: Feeder Another Feeder Heterotrophs: Any organism that obtains its food From other organisms Reptiles Humans
Energy…Where does it go? Remember the law of conservation of energy and matter? Energy cannot be created nor destroyed
Ecologist study nature by observing and testing the energy flows of ecosystems Food chain: Shows the ONE directional flow of energy in a system
Food Web • Shows the MULTIDIRECTIONAL flow of energy in a system
Tropic levels: Each step in a food chain Is called a trophic level Consumers: organisms That consume energy In a food chain Numbers are far less Then producers Producers: organisms That produce energy in A food chain They make up most of Any food chain
What about the dead stuff? • Decomposers! • Organisms that obtain energy From dead and decaying life forms