Title: Science 9 - Carbon Cycle
1The Carbon Cycle
2What is the Carbon Cycle
- Nutrient cycle in which CARBON ATOMS are 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.
3What is the Carbon Cycle
- Consists of two processes in the BIOTIC
environment - PHOTOSYNTHESIS
- (in AUTOTROPHS)
-
- CELLULAR RESPIRATION
- (in HETEROTROPHS AUTOTROPHS)
4Autotrophs
- Organisms having the ability to synthesize their
own food - Examples
- Plants Algae
5Autotrophs
- 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 light into organic
substances containing CHEMICAL ENERGY (i.e. food)
6Heterotrophs
- Organisms that do not make their own food
- Also known as consumers they eat other things
- Ex. Deer Mushrooms (a decomposer) Rabbits
7Heterotrophs
- Various types of consumers
- Scavengers/Detrivores
- Feed on dead tissue of organisms (both plans and
animals) - Ex. Vultures Crows and Shrimp
8Heterotrophs
- Herbivores
- Eat ONLY plants
- Ex. Cows Elephants Giraffes
9Heterotrophs
- Carnivores
- Eat ONLY meat
- Ex. Lions Tigers Sharks
10Heterotrophs
- Omnivores
- Eat BOTH plants and animals
- Ex. Bears and Humans
11Heterotrophs
- Decomposers
- Absorb any dead material and break it down
- Ex. Bacteria and Mushrooms
12Photosynthesis
- Takes place in autotrophs
13Photosynthesis
- 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
14Photosynthesis 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
15Photosynthesis
16Photosynthesis
17Explaining Photosynthesis
- Plants cant 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)
18Now a Short Clip
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20Explaining Photosynthesis
- Heterotrophs consume the plant material for this
stored chemical energy
21Cellular Respiration
- Takes place in autotrophs heterotrophs
22Cellular Respiration
- CELLULAR RESPIRATION is 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
23Now a Short Clip
24Cellular 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
25Cellular Respiration
- The chemical equation for respiration is
essentially the opposite of photosynthesis - Chemical Equation
Reactants
Products
Energy Carbon Dioxide Water
Sugar Oxygen
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.
26Now a Short Clip
27Complementary Processes
- Cellular Respiration Photosynthesis are
complementary processes
28Carbon Storage
29Carbon 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)
30Inorganic 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)
31Inorganic Carbon Storage
- Oceans
- Carbon dioxide dissolved in water
- Used by water plants for photosynthesis
32Inorganic 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)
33Limestone Acid Rain
34Limestone Acid Rain
35Organic Carbon Storage
- Carbon is stored in the bodies of living things
36Organic Carbon Storage
- Carbon stored in living bodies is released when
the organism dies and decomposes. - Carbon is continually being recycled
37Organic 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
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40Where is all the carbon in our world
41Captain Carbon
- A Review of The Carbon Cycle
42The Carbon Cycle
- Captains 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 Id 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.
43Photosynthesis
Carbon dioxide water light energy sugar
oxygen
44Respiration
sugar oxygen water carbon dioxide energy
45Carbon Storage
46The Carbon Cycle
