energy used for work
Free energy will become available to organisms when energy that is stored in one form gets converted to another form. The happens as a result of chemical reactions.
Organisms that consume other organisms for energy are consumers.
Organisms that eat other organisms for energy are hetreotrophs.
Organisms that photosythesize get their energy from the sun
Organisms get energy by eating autotrophs.
*Energy is the capacity to do work or cause change* Organisms store energy in organic molecules as chemical energy* Free energy is the portion of energy released during chemical reactions that is available to do work* -
The difference among organisms.
A food chain.The steps by which energy flows among groups of organisms is called an energy pyramid. The energy pyramid shows what organisms get energy from other organisms and how much they get.
The source of energy for most organisms is chemical energy and sunlight.
Apart form Geothermal energy (heat from the core of the Earth) and Tidal energy (from the Earth's spin) all energy comes from the Sun which grew the organisms that form fossil fuels, drives the wind and rain and feeds plants. Sunlight is free!
Parasites
Phytoplankton are photosynthetic organisms. They get their energy from sunlight.