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TROPHIC LEVELS

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TROPHIC LEVELS

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Âge recommandé: 12 ans
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TROPHIC LEVELS

TROPHIC LEVELS

JOSE ANTONIO COSTOYA LOPEZ
1

autotrophs herbivores webs carnivores phytoplankton consumers trophic scavengers apex omnivores photosynthesis level Detritivores predators

Organisms in food are grouped into categories called levels . These levels are divided into producers , , and decomposers .

Producers make up the first trophic level . Producers , also known as , make their own food and do not depend on any other organism for nutrition . Most autotrophs use a process called to create food from sunlight , carbon dioxide , and water . Plants are the most familiar type of autotroph , but there are many other kinds such as algae , some bacteria or .

Consumers
Primary consumers are . Herbivores eat plants , algae , and other producers . They are at the second trophic .
Secondary consumers eat herbivores . They are at the third trophic level .
Tertiary consumers eat the secondary consumers . They are at the fourth trophic level .
There may be more levels of consumers before a chain finally reaches its top predator . Top , also called predators , eat other consumers . They may be at the fourth or fifth trophic level . They have no natural enemies except people .
Consumers can be ( animals that eat other animals ) or ( animals that eat both plants and animals ) .

Detritivores and decomposers make up the last part of food chains . are organisms that eat nonliving plant and animal remains . For example , such as vultures eat dead animals .
Decomposers , like fungi and bacteria , complete the food chain . Decomposers turn organic wastes , such as decaying plants , into inorganic materials , such as nutrient - rich soil .