NUTRIENT CYCLES Nutrients are chemicals that organisms need to survive. Example – All organisms need Nitrogen to make protein NUTRIENTS must be RECYCLED when animals and plants die so that new animals and plants can get nutrients too.
NUTRIENT CYCLES Nutrients are chemicals that organisms need to survive. Example – All organisms need Nitrogen to make protein NUTRIENTS must be RECYCLED.
Dec 28, 2015
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NUTRIENT CYCLES
Nutrients are chemicals that organisms need to survive.
Example – All organisms need Nitrogen to make protein
NUTRIENTS must be RECYCLED when animals and plants die so that new animals and plants can get nutrients too.
Carbon Dioxide + Water + Sun’s Energy --> Oxygen + Sugar
PHOTOSYNTHESIS AND RESPIRATION ARE PARTNERS!
Photosynthesis: Producers CONVERT solar energy to sugar.
Carbon Dioxide + Water + Sun’s Energy --> Oxygen + Sugar
PHOTOSYNTHESIS AND RESPIRATION ARE PARTNERS!
Photosynthesis: Producers CONVERT solar energy to sugar.
Oxygen + Sugar--> water+ carbon dioxide + chemical energy
RESPIRATION: Animals (and plants) use Sugar as a source of energy for growth, movement, repair, and reproduction
RESPIRATION: Animals (and plants) use Oxygen and Sugar to make energy! CO2 is a product of this reaction and RECYCLES the CO2 in the air.
PHOTOSYNTHESIS AND RESPIRATION ARE PARTNERS!
Carbon Dioxide + Water + Sun’s Energy --> Oxygen + Sugar
Oxygen + Sugar--> water+ carbon dioxide + chemical energy
Combustion means Burning of Fossil Fuels
Decomposed organisms are “storage” for carbon in the soil
THE CARBON CYCLE:How carbon is balanced in ecosystems
Carbon conundrum
• Sources of atmospheric CO2 are increasing
• SINKS (ways to remove CO2) from the atmosphere are DECREASING
• We therefore have an excess CO2 in our atmosphere
• This creates a blanket around the earth that traps solar energy (GREENHOUSE EFFECT)
WidespreaWidespread Pollutiond Pollution
Greenhouse EffectGreenhouse Effect
The OCEAN is an important part of the carbon cycle too.
THE NITROGEN CYCLE
AMMONIA (NH3) is a WASTE product of animals
Dead animals and plants release N into soil
Bacteria convert (change) Ammonia into Nitrates
Bacteria convert (change) Atmospheric Nitrogen and
Nitrites into Nitrates
Some Nitrates leech or “leak” out of the soil into water
Phosphate in the water
Runoff into water
Weathering or ‘wearing down’ of rocks
Phosphate in the water
Runoff into water
Weathering or ‘wearing down’ of rocks
SEDIMENTATION (animals, plants and rocks settle to the ground) making new rocks
THE NITROGEN CYCLE
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