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Created by Mr. Hemmert. Food Chains. Science ALCOS. L5.3 Tracing the flow of energy through a food chain Example: producer , first-level consumer, second-level consumer, and third-level consumer. Food Chains. Every organism needs to obtain energy in order to live. - PowerPoint PPT Presentation
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FOOD CHAINSCreated by Mr. Hemmert
Science ALCOS L5.3 Tracing the flow of energy through
a food chainExample: producer, first-level consumer,
second-level consumer, and third-level consumer
Food Chains Every organism needs to obtain energy
in order to live. Plants get energy from the sun, some
animals eat plants, and some animals eat other animals.
Living things depend on one another to live.
Food Chains A food chain is the movement of food
energy in a sequence of living things.
producer
consumerconsumer
consumer
consumer
Food Chain Vocabulary Consumers that are eaten are called
prey. A consumer that eats prey is a
predator.
Prey and Predators Predators limit the number of prey
animals in a habitat. Ex. Wolves are predators of antelope.
They keep the population of antelope from increasing too much, so the antelope don’t eat all of the producers.
Predators often compete for the same prey. This limits the number of predators in a habitat.
Level of Producers Primary Producers - Organisms that
make their own food from sunlight. Primary producers are always the base (bottom) of the every food chain.
Levels of Consumers First Level Consumers are animals
that eat producers (plants). They are also called herbivores (plant-
eaters)
Levels of Consumers Second Level Consumers eat first
level consumers. They are called carnivores (meat – eaters) and omnivores (animals that eat both animals and plants.)
Levels of Consumers Third level consumers eat second level
consumers.
Practice
What is the primary producer? _________________________
What is the first-level consumer? _________________________
What is the second - level consumer? _______________________What is the third-level consumer? ________________________
PracticePrimary Producer: _______________
First-level Consumer: _____________
Second-level Consumer: __________
Third-level Consumer: ____________
Decomposer: ___________________
leaf bird
snail
fox
bacteria
Resources Microsoft Online