1. Nutrition and Energy Flow
Food Webs/Food Chains

2. The Producers Autotrophs
Plants – use the sun’s energy to create food (photosynthesis)
Types – Grass, Trees, & Green Algae
Importance-other organisms rely on autotrophs for nutrients and energy.

3. The Consumers Heterotrophs
Can not make its own food/feeds on other organisms
Types – Herbivore, Carnivore, Scavengers & Omnivores
Decomposers break down dead and decaying plants and animals

4. Food Chain
A model used to show how matter and energy move through an ecosystem.
Nutrients & Energy move from autotrophs to heterotrophs and eventually to decomposers

5. Food Chain

6. Trophic Level
Each organism

7. Food Web
Shows all possible feeding relationships at each trophic level in a community
More realistic than the food chain
Most organisms depend on more than one species for food.

8. Food Web