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The Carbon Cycle

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  1. The Carbon Cycle M.BREGAR (DANTE C.S.S.)

  2. What is the Carbon Cycle? • Nutrient cycle in which CARBON ATOMSare RECYCLED through the abiotic and biotic parts of an environment. CARBON ATOMS Any excreted waste can contain large amounts of carbon that can be recycled as fertilizer. Consumers of plants ingest the carbon stored within the plant. The same carbon, originally from wood, becomes apart of the animal back to the plants Wood burned produces carbon dioxide. The carbon being released had been stored within the plant through photosynthesis. M.BREGAR (DANTE C.S.S.)

  3. What is the Carbon Cycle? • Consists of two processes in the BIOTIC environment: PHOTOSYNTHESIS (in AUTOTROPHS) & CELLULAR RESPIRATION (in HETEROTROPHS & AUTOTROPHS) M.BREGAR (DANTE C.S.S.)

  4. Autotrophs • Organisms having the ability to synthesize their own food Examples: Plants & Algae M.BREGAR (DANTE C.S.S.)

  5. Autotrophs • Organisms that can make their own food, such as plants which make their food from inorganic substances • Why are autotrophs imporant? • Called producers because they produce chemical energy for an entire ecosystem • Convert inorganic substances & lightinto organic substances containing CHEMICAL ENERGY (i.e. food) M.BREGAR (DANTE C.S.S.)

  6. Heterotrophs • Organisms that do not make their own food • Also known as consumers – they “eat other things” • Ex. Deer, Mushrooms (a decomposer), Rabbits M.BREGAR (DANTE C.S.S.)

  7. Heterotrophs • Various types of consumers: • Scavengers/Detrivores • Feed on dead tissue of organisms (both plans and animals) • Ex. – Vultures, Crows, and Shrimp M.BREGAR (DANTE C.S.S.)

  8. Heterotrophs • Herbivores • Eat ONLY plants • Ex. – Cows, Elephants, Giraffes M.BREGAR (DANTE C.S.S.)

  9. Heterotrophs • Carnivores • Eat ONLY meat • Ex. – Lions, Tigers, Sharks M.BREGAR (DANTE C.S.S.)

  10. Heterotrophs • Omnivores • Eat BOTH plants and animals • Ex. – Bears and Humans M.BREGAR (DANTE C.S.S.)

  11. Heterotrophs • Decomposers • Absorb any dead material and break it down • Ex. – Bacteria and Mushrooms M.BREGAR (DANTE C.S.S.)

  12. Photosynthesis Takes place in autotrophs M.BREGAR (DANTE C.S.S.)

  13. Photosynthesis • Takes place in autotrophs, specifically in the leaves of green plants • In photosynthesis, plants trap sunlight (energy from the sun) and use it to create food (sugar called glucose) • Key – plants turn light energy into chemical energy M.BREGAR (DANTE C.S.S.)

  14. Photosynthesis Equation • Photosynthesis is the process in which plants make food (sugar). • Equation: Reactants Products Carbon Dioxide + Water + Energy Sugar + Oxygen Called Glucose. It is a plants foodStored in body of a plant Released back into the air (waste product) Taken from the environment (air) Roots absorb water from soil and transport it to the leaves Chloroplasts (located in leaves) trap light energy from sun M.BREGAR (DANTE C.S.S.)

  15. Photosynthesis M.BREGAR (DANTE C.S.S.)

  16. Photosynthesis M.BREGAR (DANTE C.S.S.)

  17. Explaining Photosynthesis • Plants can’t use light energy directly, instead they must convert it to chemical energy in the process of photosynthesis • This chemical energy is either • Used to survive (energy to live) • Stored as physical part of the plant (called starch) M.BREGAR (DANTE C.S.S.)



  20. Explaining Photosynthesis • Heterotrophs consume the plant material for this stored chemical energy M.BREGAR (DANTE C.S.S.)

  21. Cellular Respiration Takes place in autotrophs & heterotrophs M.BREGAR (DANTE C.S.S.)

  22. Cellular Respiration • CELLULAR RESPIRATIONis when food (chemical energy) is broken down to release energy • This is called catabolism or “digestion”. • Sugar (Food) made by plants in photosynthesis is broken down through cellular respiration into an “energy form” which can be used M.BREGAR (DANTE C.S.S.)

  23. Now a Short Clip (METABOLISM) M.BREGAR (DANTE C.S.S.)

  24. Cellular Respiration • Cellular Respiration takes place in the mitochondria of plant and animal cells • In respiration, Oxygen is combined with Sugar to produce ENERGY, Carbon Dioxide, and Water M.BREGAR (DANTE C.S.S.)

  25. Cellular Respiration • The chemical equation for respiration, is essentially the opposite of photosynthesis • Chemical Equation: Reactants Products Sugar + Oxygen Energy+ Carbon Dioxide + Water Sugar which is made by producers or eaten by consumers Used to breakdown the sugar. It is “breathed” in by animals. Energy is produced which allows the animal to live Waste Product of released into the environment (breathed out) Waste Product. Often reused, or can be released. M.BREGAR (DANTE C.S.S.)


  27. Complementary Processes • Cellular Respiration & Photosynthesis are complementary processes M.BREGAR (DANTE C.S.S.)

  28. Carbon Storage M.BREGAR (DANTE C.S.S.)

  29. Carbon Storage • Carbon is continually recycled in living ecosystems, but it can also be stored • Ways of storing carbon: • (1) Inroganic Carbon Storage (non – living) • (2) Organic Carbon Storage (living) M.BREGAR (DANTE C.S.S.)

  30. Inorganic Carbon Storage • Storage of carbon atoms in non-living things occurs in 3 ways: • Atmosphere • Carbon dioxide in the air • Contains least stored carbon (0.03%) M.BREGAR (DANTE C.S.S.)

  31. Inorganic Carbon Storage • Oceans • Carbon dioxide dissolved in water • Used by water plants for photosynthesis M.BREGAR (DANTE C.S.S.)

  32. Inorganic Carbon Storage • Soil • Carbon stored in rocks such as limestone • Most carbon is stored in soil / rock • Can be released when rocks are disturbed (volcanoes, acid rain) M.BREGAR (DANTE C.S.S.)

  33. Limestone & Acid Rain M.BREGAR (DANTE C.S.S.)

  34. Limestone & Acid Rain M.BREGAR (DANTE C.S.S.)

  35. Organic Carbon Storage • Carbon is stored in the bodies of living things M.BREGAR (DANTE C.S.S.)

  36. Organic Carbon Storage • Carbon stored in living bodies is released when the organism dies and decomposes. • Carbon is continually being recycled M.BREGAR (DANTE C.S.S.)

  37. Organic Carbon Storage • Carbon stored in a body can be turned into fossil fuels (gas, coal, etc.) • Peat (dead plant material) which gets buried can turn into Coal M.BREGAR (DANTE C.S.S.)



  40. Where is all the carbon in our world M.BREGAR (DANTE C.S.S.)

  41. Captain Carbon A Review of The Carbon Cycle M.BREGAR (DANTE C.S.S.)

  42. The Carbon Cycle Captain's Log: After floating around for a while and enjoying the fresh air, I became restless and started to search for an adventure. Since I heard that green plants enjoy having carbon dioxide molecules over for company, I thought I'd give it a try!!!!!! Captain Carbon with 2 of his oxygen buddies. Together they form a molecule called carbon dioxide Before I knew it, I was converted from being part of a gas, CO2 into a glucose (sugar) molecule. M.BREGAR (DANTE C.S.S.)

  43. Photosynthesis Carbon dioxide + water + light energy → sugar + oxygen M.BREGAR (DANTE C.S.S.)

  44. Respiration sugar + oxygen → water + carbon dioxide + energy + M.BREGAR (DANTE C.S.S.)

  45. Carbon Storage M.BREGAR (DANTE C.S.S.)

  46. The Carbon Cycle M.BREGAR (DANTE C.S.S.)