Biology- Class Notes- Ecological Pyramids
The pyramid of
energy illustrates that the amount of available energy decreases at each succeeding trophic
Pyramid of Energy
Biology- Class Notes- Organisms and Their Environment
What Youll Learn
You will describe ecology and the work of ecologists.
You will identify important aspects of an organisms environment.
You will trace the flow of energy and nutrients in the
Biology- Class Notes- Food Chain
A food chain is a simple model that scientists use to show how matter and energy move
through an ecosystem.
In a food chain, nutrients and energy move from autotrophs to heterotrophs and,
eventually, to decomposers.
Biology- Class Notes- How Organisms obtain Energy
Compare how organisms satisfy their nutritional needs.
Trace the path of energy and matter in an ecosystem.
Analyze how matter is cycled in the abiotic and biotic parts of the biosphere.
Biology- Class Notes- Ecosystem
Populations of plants and animals that interact with each other in a given area and with
the abiotic components of that area.
Biotic and abiotic factors form ecosystems
An ecosystem is made up of interacting popul
Biology- Class Notes- Symbiosis, mutualism and parasitism
The relationship in which there is a close and permanent association between organisms
of different species is called symbiosis.
Symbiosis means living together. Three kinds of symbiosis
Biology- Class Notes- Levels of Organization
Levels of Organization
Ecologists study individual organisms, interactions among organisms of the same
species, interactions among organisms of different species, as well as the effects of abiotic
factors on in
Biology- Class Notes- Human body In Ecology
Mold in walls, floors, or basement Ventilation systems
Any moldy food
Aquatic ecosystems occur in both fresh- and saltwater forms.