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Transcript
Roles of Organisms in an Ecosystem
PRODUCER – Makes own food from sun’s energy
CONSUMER – Gets food from other organisms
• Primary – Eats plants
• (HERBIVORES eating PRODUCERS)
• Secondary – Eats animals that eat plants
• (CARNIVORES eating HERBIVORES)
• Tertiary – Eats animals that eat other animals
• (CARNIVORES eating CARNIVORES)
© Hedgehog Learning
In the food web, identify:
• Herbivores, carnivores, and
producers
• Organisms at the second
trophic level
• Organism with the highest
concentration of toxins
• Which organism represents the
highest amount of energy and
biomass
© Hedgehog Learning
10% of Energy
Tertiary
Consumers
10% of Energy
Secondary Consumers
10% of Energy
Primary Consumers
Producers – Largest amount of energy,
number of organisms, and biomass
Solar Energy
Changes in the environment, whether natural or human-caused,
may affect the stability of an ecosystem.
These changes can affect the populations, possibly causing
some species to increase in number while others decrease.
Discuss the ecological
impacts of drought
like in the picture to
the left.
What populations
would be the first to
suffer?
What populations are
most likely to be least
effected?
© Hedgehog Learning