There are 2 ways that organisms obtain their energy 1. Producer (aka Autotroph) 2. Consumer (aka Heterotroph) Makes food by changing light energy of the sun into chemical energy, or food Ex. Plants, algae, some bacteria Organisms that do not make their own food and must consume it Ex. Humans, dogs, fungi (such as mushrooms), sharks, etc Mrs. Lalondes dog! 1) Herbivores Animals that obtain ALL of their energy from eating producers (plants) Ex. Cows, Elephants, Giraffes 2. Carnivores Obtain ALL of their energy from eating other organisms Lions, tigers, sharks, hawks 3. Omnivores Obtain energy by eating a mixture of plants and animals Ex humans, bears 4. Scavenger Obtain energy by eating dead organisms Ex. Vultures, shrimp 5. Decomposer absorb any dead material and break it down into simple nutrients or fertilizers Ex. Bacteria and Mushrooms