### photon:

Red photon
* have less energy than blue photons
  - more energy than blue photons
  - the same energy as blue photons
* penetrate deepest.

Photosynthetic organism
* Many photosynthetic organisms have a mixture of pigments
  - adaptations that concentrate or store carbon dioxide
  - live here
* Most photosynthetic organisms live in aquatic environments
  - deep water
* Most photosynthetic organisms use light
  - red light
* Some photosynthetic organisms use energy
  - solar energy
* are called photoautotrophs , since they can create their own food
  - producers that provide food to nearly all consumers on Earth
* can use the energy of light to convert carbon dioxide into sugar.
* capture the momentum of a photon and translate it into biological energy.
* convert light into all other forms of energy.
* include algas
  - multicellular algas
* produce many pigments other than chlorophyll a
  - oxygen that is important to most of the planet's biosystems

### physical attraction:

Carnality
* includes both indulging the flesh and inviting others to do the same.
* is different from the continuing struggle with our flesh
  - physical attraction
  - the key to kissing's popularity

### physical entity:

Adjunct
* are associates
  - construction
* physical entity

### physical entity:

Body of water
* All bodies of water contain extremely delicate ecosystems
  - have turbidity to a certain extent, some more than other
  - represent our emotions and unconscious
* Bodies of water are dark - they have some image artifacts because their returned signal is weak
  - especially powerful in soothing and engaging the mind
  - can form natural firebreaks
  - have their own, special set of signs
  - is part of surfaces
  - lose their liquid appearance
* Every body of water contains natural contaminants
  - is polluted to some extent
* Many bodies of water have no-discharge regulations in effect.
* Most bodies of water harbor large amounts of bacteria.
* Some bodies of water have LOTS of pelagics.

### physical entity | building block:

Headstone
* are the antithesis of cyberspace, their characters carved in stone.
* building block
* mark the graves of favorite dogs.
+ Funeral, Modern funerals: death customs
  * At many present day funerals there is a video tribute played before, after, or during the funeral service. Memorial folders or prayer cards are handed out at many funeral services and this, too, is a way to make a funeral service personal. Headstones are bought so that everyone can see who has been buried in a specific grave. They usually tell the name, date of birth and the date of death.

Essential
* are premium products that meet basic nutritional or personal care needs.
* is concerned about the safety and proper absorption of minerals.

### physical entity | essential:

Natural fat
* Most natural fats contain a complex mixture of individual triglycerides.
* are essential.
* do have many roles in the diet, but too much fat can be harmful.
* fall into one of three families of fats.

Physical object
* All physical objects attract one another through the force of gravity
  - consist entirely of elementary particles
  - emit some level of heat
  - resist changes to their states of motion
* Every physical object is liable to changes in color as well as in position.
* are capable of fall
  - low in cognitive friction
* have no color.