23-1 Energy Flow in Ecosystems Study Guide
A producer is an organism that makes it’s own food. Consumers that eat both plants and animals are called omnivores. A deer is an example of a herbivore. Vultures are scavengers because they feed on the bodies of dead organisms. A producer is always the first organism in a food chain. A food web consists of many overlapping food chains. An energy pyramid shows the amount of energy that moves from one feeding level to another in a food web. In an energy pyramid, the producer lever has the most available energy. If all the producers in an ecosystem died, the other organisms would have to leave the area in search of food, or they would starve. A food chain starts with a producer (grass) then first level consumer (something that eats the grass), then second level consumer (something that eats the first level consumer).