2. Definitions Organism – Individual form of live Plants, Animals, Bacterium Herbivores – Animals that eat ONLY PLANTS Carnivores – Animals that eat ONLY ANIMALS Omnivores – Animals/People who eat BOTH ANIMALS & PLANTS
3. Definitions Decomposers – Feed on decaying matter Consumers – Can’t produce their own food Producers – Can produce their own food Trophic Level – Different levels of food chains
9. Population Group of organisms that live in a particular area Number of organisms changes over time Limiting Factors – Prevent populations from growing Important to a stable population
10. Equilibrium Increase carnivores -> Decrease herbivores Harder for carnivores to eat Relatively stable relationship Balanced equilibrium is a successful food chain
11. Environmental Changes Decrease food and water supplies Light – Common resource needed for plants Space – Organisms need space to grow Weather – Storms affect ecosystems
12. Environmental Changes Predators – Decrease the population Diseases – Affect the growth rate Parasitism – The host becomes harmed
13. Environmental Changes Global warming Deforestation – Killing habitats and ecosystems Pollution – Air and water pollution Oil spills, fertilizers Climate Change – Difficult for Plants/Animals to adapt
14. Number of Organisms Energy is lost when organism eats another Has to be more plants than plant eaters Births & Deaths affect population growth Extinction -> Affects entire chain
15. Energy Flow Energy is lost at each stage of the food chain Energy is lost to the environment Down river, decaying Average 10% of energy is passed on More smaller animals in the transfer of energy
18. Class Activity Create a food chain on a poster board Can be a Grassland Biome, Pond Biome, Ocean Biome, etc Show the different trophic levels Identify the flow of energy Identify the organism Consumer, producer, omnivore, etc
