1 Forecast of natural gas production worldwide from 2012 to 2040 (in trillion cubic feet)Global natural gas production forecast 2012-2040. 2  Projected natural gas consumption worldwide from 1990 to 2035 (in million metric tons of oil equivalent)World natural gas consumption. Natural gas prices in the United States and Europe from 1980 to 2030 (in U.S. dollars per million British thermal units)*U.S. and European natural gas price 1980-2030.
Phototrophic organisms convert light energy into chemical energy in the form of ATP. Photosynthetic organisms (photoautotrophs) also use light energy to make both ATP and reduced electron carriers (NADH or NADPH), which are both required to reduce carbon dioxide (CO2) to carbohydrate (CH2O).
Some organisms have the amazing ability to make (produce) their own energy-rich food molecules from sunlight and simple chemicals. Organisms that make their own food by using sunlight or chemical energy to convert simple inorganic molecules into complex, energy-rich organic molecules like glucose are called producers or autotrophs.