natural (nutrient) cycles
DESCRIPTION
Natural (Nutrient) Cycles. C, N, and P -macronutrients (we need a relatively large amount). Carbon Cycle - 5 processes. Respiration -vs- Photosynthesis Decomposition Waste Removal Combustion Metabolism in Organisms Carbohydrates - plants, some animal - PowerPoint PPT PresentationTRANSCRIPT
Natural (Nutrient) Cycles
C, N, and P-macronutrients
(we need a relatively large amount)
Carbon Cycle- 5 processes
• Respiration -vs- Photosynthesis• Decomposition • Waste Removal• Combustion• Metabolism in Organisms
– Carbohydrates - plants, some animal– Proteins - animals, some plants (peanuts)– Lipids - animals, some plants (oils)– Nucleic Acids - all cells (DNA, ATP)
Photosynthesis
QuickTime™ and a decompressor
are needed to see this picture.
Carbon “moves” from the atmosphere as carbon dioxide (CO2) to Plants as sugar (C6H12O6).
Photosynthesis
QuickTime™ and a decompressor
are needed to see this picture.
QuickTime™ and a decompressor
are needed to see this picture.
Respiration
What happens in respiration?•Oxygen - is “gotten” (breathing, for example)
•Sugar - is obtained (made - plants, eaten - animals)
•Blood - carries O2 & sugar to all cells•Cells - absorb O2 & sugar by diffusion•Mitochondria - Makes Energy•CO2 - is exhaled/released as waste
Decomposition- break down of dead organic matter
QuickTime™ and a decompressor
are needed to see this picture.
Decomposition
QuickTime™ and a decompressor
are needed to see this picture.
QuickTime™ and a decompressor
are needed to see this picture.
Metabolism- all the chemical reactions in an organism
QuickTime™ and a decompressor
are needed to see this picture.
Combustion - burning of organic
material.
QuickTime™ and a decompressor
are needed to see this picture.
QuickTime™ and a decompressor
are needed to see this picture.
Carbon Cycle Overview
QuickTime™ and a decompressor
are needed to see this picture.
Nitrogen CycleImportance?• Animal and Plants need it (Protein/Nucleic Acid)• Plants (and animals) can’t use N gas!
Processes - that put N into a usable form.Takes place in the Atmosphere & Lithosphere.• In Air: Lightning strikes convert N into a usable form
• Nitrogen Fixation (by bacteria in soil)– In soil: Some Bacteria in symbiosis with Legumes– In soil: Some bue-green Algae in soil
Nitrogen Cycle Overview
QuickTime™ and a decompressor
are needed to see this picture.
Protein
Air
Soil
Nitrogen Cycle Overview
QuickTime™ and a decompressor
are needed to see this picture.
Phosphorus CycleImportance?• Plants growth (especially of leaves)
– >Eutrophication - over growth of algae
• All cells need it for: – DNA - genetics– ATP - Cellular Energy
Processes -Take place primarily in the hydrosphere & lithosphere.• Demineralization: phosphorous in rocks is dissolved by
ground water• Animal/Plant Excretion and Decomposition
Phosphorus Cycle Overview
QuickTime™ and a decompressor
are needed to see this picture.A
B
C
Eutrophication
D
Water Cycle Overview
QuickTime™ and a decompressor
are needed to see this picture.
Water Cycle
• Condensation• Precipitation• Evaporation• Respiration• Evapotranspiration• Infiltration• Run-off
Imbalance in nature
QuickTime™ and a decompressor
are needed to see this picture.
Food Web / Cycles
QuickTime™ and a decompressor
are needed to see this picture.
Summary
• C - needed for “backbone” of all organic chemicals.
• N - proteins, nucleic acids
• P - nucleic acid / plant growth
• Water - 75% of organisms / Earth
• All (nutrients) are recycled according to The Law of Conservation of Matter.