Living Things Need Energy

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Living Things Need Energy
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Energy

• Sunlight is the source of energy for almost all
  living things.

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• Begins with the SUN as the source of energy for
  all living things
• Photosynthesis occurs because of the sun

6CO2 6H2O sunlight chlorophyll ?C6H12O6
6O2
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Producers

• Organisms that use sunlight to make food

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Consumers

• Organisms that get energy from eating other
  organisms

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Herbivore

• Organisms that eats plants (gophers,
  grasshoppers)
• PRIMARY CONSUMERS

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Carnivore

• Organisms that eat other animals (wolf, coyotes,
  owls)

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Omnivore

• Organisms that eats both plants and animals
  (bears, humans)
• SECONDARY/TERTIARY CONSUMERS

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Scavengers

• They eat dead things
• Coyotes
• Vultures

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Decomposers

• Break down the remains of other organisms
  (recycles)

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Consumer Levels

• Primary Consumers (1st level) get their energy
  from plants HERBIVORES
• Secondary Consumers (2nd level) get their
  energy from other organisms CARNIVORES/OMNIVORES
  
• Tertiary Consumers (3rd level) get their energy
  from other organisms CARNIVORES/OMNIVORES/SCAVENG
  ERS

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Food Chain

• Shows the transfer of energy in one pathway

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Food Web

• Shows many energy pathways in an ecosystem

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Another way of showing the transfer of energy in
an ecosystem is theENERGY PYRAMID.
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Energy Pyramid Interactive

• Webpage

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Energy pyramids show

• Trophic level indicates an organisms position in
  a food chain.
• The number of consumers in a level will decrease
  as the trophic levels get higher because they
  have to eat more organisms to stay alive

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Not all energy is used by producers 10 of the
energy stored can be passed on to organisms that
cannot make their own food.90 of the energy is
used for everyday life processes (breathing,
moving, digestion, etc)Some energy is lost as
heat.
Energy
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Closer look at food webs

• Food Web - Menu