1. Equation
   1. photo = light
   2. synthesis = putting together
   3. plus minerals like we need vitamins and minerals
2. 4 components
   1. Light
      1. sun
      2. artificial
         1. hydroponics
   2. Chlorophyll
      1. green leaves
      2. in Chloroplasts
      3. absorbs light energy
      4. combines CO2 and water
      5. makes glucose
         1. energy
      6. oxygen
         1. by-product
   3. water
      1. soil to roots to stem to leaf
   4. carbon dioxide
      1. enters leaf through stomata
      2. from air
3. Rate
   1. limiting factors
      1. restricts the rate
      2. environmental conditions
         1. night
            1. no light
         2. winter
            1. temperature
         3. CO2
            1. limit when light and warm
      3. experiment
         1. canadian pondweed
         2. oxygen produced in a given time
         3. fair test
            1. all variables constant but one
   2. light
      1. use a light meter
      2. NB max rate independent of CO2 & temp
   3. CO2
      1. NB max rate
      2. control
         1. sodium hydrogencarbonate
            1. dissolve in water
   4. temperature
      1. too low
         1. enzymes work slow
      2. too high
         1. enzymes damaged
            1. enzyme denature
         2. 45 deg C
            1. greenhouse
      3. control temperature
         1. water bath
   5. water
      1. if limiting factor = plant damage
4. Farming
   1. outdoors
      1. weather changes
      2. other conditions
         1. animals
         2. pest
         3. disease
         4. soil nutirent
            1. salination
   2. greenhouse
      1. trap suns heat (global warming)
      2. winter
         1. heating
      3. summer
         1. ventilation
         2. shading
      4. artifical light
      5. increase CO2
         1. paraffin heater
            1. CO2 by-product
      6. enclosed
         1. control
            1. pest
            2. disease
            3. fertilizers / minerals on demand
      7. correct conditions
         1. grow faster
         2. decent crop
         3. harvest more often
   3. hydroponics
      1. tomato & cucumbers
      2. soilless system
      3. water efficent!
      4. vertical urban farming
         1. zero carbon miles
   4. aqaponics
      1. add fish into system for nutrients
      2. fish convert food to protein at greater efficiency than any other animal (insects?)