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Energy, Producers & Consumers

Energy & Primary Producers

"Energy flows through an ecosystem in a one-way stream, from primary producers to various consumers."

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Living systems rely on energy to operate. Sunlight is the ultimate energy source on Earth.Organisms that capture sunlight or other chemicals and transform it into any form of energy are called autotrophs. Autotrophs are also known as primary producers. These organisms are important for the flow of energy within the biosphere.

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Photosynthesis is the process where most primary produces capture the energy from sunlight to power chemical reactions. These reactions are beneficial to other organisms because it convert water and carbon dioxide into oxygen and carbohydrates, such as starch and sugar.


Chemosynthesis is another process that use chemical energy to produce carbohydrates. This process does not require sunlight; thus, it is often carried out at places that lack sunlight such as in the deep ocean.

Consumers

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Organisms that rely on other organisms for energy are called heterotrophs, or consumers. This imply that heterotrophs do not produce energy by their own. 

* Some organisms might fall in more than one category -- depends on their environment. "Hyenas (carnivores) will scavenge (scavengers) if they get a chance."

Types of Consumers:
  • Carnivores- Kill and eat other animals (Wolves)
  • Herbivores- Gain energy by eating plants, fruits, leaves, seeds, or roots (Deer)
  • Scavengers- Obtain energy through the carcasses of other dead animals (The King Vulture)
  • Omnivores- Eat other animals and plants to receive energy (Humans!!)
  • Decomposers- Organisms that are fed by chemically breaking down organic components (Mushrooms)
  • Detritivores- Simply eat detritus particles by chewing or grinding (Earthworms)

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