Carbon & oxygen cycles & energy UNI Life: The Natural World 2009

build plants and animals Plants: overall light energy H2O CO2 O2 build plants and animals sugar CH2O

Inside plant cells: day Store sugar or use sugar to build more plant atmosphere CO2 O2 light energy Photosynthesis (plants only) Store sugar or use sugar to build more plant sugar CH2O CO2 O2 Respiration (all cells) H2O ATP (cell fuel)

Inside plant cells: night atmosphere O2 CO2 Respiration (all cells) sugar CH2O stored in plant H2O ATP (cell fuel)

use sugar to build more plant Inside plant cells: overall atmosphere CO2 O2 light energy use sugar to build more plant Photosynthesis (plants only) sugar CH2O CO2 O2 Respiration (all cells) H2O ATP (cell fuel)

Respiration (all cells) Inside plant cells: overall atmosphere O2 CO2 Respiration (all cells) sugar CH2O stored in plant H2O ATP (cell fuel)

store food (fat) and build more animals Animals: overall atmosphere heat CO2 O2 store food (fat) and build more animals activity eat food (sugar)

Respiration (all cells) Animals: inside cells (just like plants at night) atmosphere O2 CO2 Respiration (all cells) sugar CH2O stored in fat or eaten from plant H2O ATP (cell fuel)

Fossil fuels atmosphere ancientplants O2 CO2 heat Fossil fuel burning oil gas coal

Plants and animals overall light energy build plants H2O Sugar, etc. CH2O CO2 O2 activity heat build animals Sugar, etc. CH2O activity

Plants, animals and fossil fuel overall light energy build plants H2O Sugar, etc. CH2O CO2 O2 oil gas coal Sugar, etc. CH2O Sugar, etc. CH2O heat build animals activity CO2 O2 Fossil fuel burning