Food Webs
A diagram showing overlapping food chains in an ecosystem
What is a food web.
Organisms that eat dead/decaying matter and breaks them down into simple nutrients or elements that return back to the soil to become fertilizer for producers
What are decomposers?
The gas plants produce and release into the atmophere
What is oxygen?
The only source of energy for all life on earth.
What is the sun?
Organisms that create food from sunlight.
What are producers/autotrophs?
Bacteria and fungi are two examples of this.
What are decomposers?
The process that plants use to convert sunlight energy into chemical energy (glucose)
What is photosynthesis?
The base of an energy pyramid will always have these organisms in it
What are producers/autotrophs?
The energy source of all life on earth.
What is the sun?
An organism that cannot make its own energy and depends solely on producers to obtain energy
primary consumer (herbivore)
A food chain always begins with this type of organism
What are producers/autotrophs
This happens to organisms as they move up the energy pyramid
What is a energy lost?
The arrows in a food chain or food web represent this
What is energy flow (energy transfer)?
All algae, plants and some bacteria are this.
What are producers?
This is why an complex food web is better than a simple food web
What are more food options?
The third level in an energy pyramid will have this type of consumer
What is a secondary consumer?
These organisms make their own food by using inorganic substances (chemicals)
What are chemotrophs?