Producers, Consumers, and Decomposers 3.3 Producers All living things get energy from food Producers make their own food They are called Autotrophs
Most are green plants and algae Make food through photosynthesis Photosynthesis In order for photosynthesis to work, the following is needed: Source of energy sunlight
Water H2O Carbon Dioxide CO2 Chlorophyll a special green pigment, which is a chemical that can absorb certain kids of light Chlorophyll is stored in special cell structures known as chloroplasts Producers Humans and animals rely on producers for more than just food Oxygen
in the atmosphere comes from plants and algae More than 50% of that oxygen comes from green plants in the ocean Consumers Organisms that depend on producers for food
All animals Cannot make their own food (Heterotrophs) Three types of consumers Herbivore Carnivore Omnivore Herbivore Plant
eaters Feed on herbivores or other carnivores Wolves, eagles, frogs, snakes Some do not feed on living things, but rather dead animals Rotting meat is called carrion Carnivores that feed on carrion are called scavengers (lobsters, vultures, coyotes) Omnivores Consumers who eat both plants
and animals Can use many food sources at different times of the year Humans, bears, pigs, raccoons Decomposers Some consumers get their
energy by breaking down dead organisms Without decomposers, dead animal and plant material would build up everywhere Fungi and bacteria are common Decomposers Eat
any organic matter Organic matter, such as fallen leaves and tree trunks, is any material containing carbon that was once alive Decomposers make sure that matter passed from plants to animals is recycled again
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