PRESENTATION OUTLINE
Create a drawing that shows how population, community, and ecosystems are related.
How does energy move through a food web?
All the food chains in a habitat are put together in a food web to show how the food chains overlap. Energy starts with the sun, then goes to plants and then consumers.
The energy pyramid tell us two things about how energy moves in an ecosystem:
1. In an ecosystem the producers have the most energy and the amount of energy goes down as you move up the pyramid, the tertiary consumers have the least amount of energy in an ecosystem.
2. The producers in an ecosystem have the largest population and the size of the population goes down as you move up the pyramid, the tertiary consumers have the smallest population in an ecosystem.
What is the relationship between Predator and Prey?
The graph shows that as the population of the predator (fox) gets too high then the prey population (rabbit) goes down. When the prey population goes down then the predator doesn't have enough food and the prey population goes down. Because there are less predators then the prey population goes back up. This goes on and on and on....
How do animal interact in your ecosystem?
Food Web Assignment
Use the list of organisms your class created or make your own list to make a food web. You must have at least 4 producers, 3 primary consumers and 2 secondary/tertiary consumers. All organisms must be in the same habitat!
