The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly...

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The Carbon Cycle

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Transcript of The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly...

Page 1: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

The Carbon Cycle

Page 2: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

Thecarbon atomsthat make up

DNA, proteins,and other

molecules of life

Commonly cycle between earth’s rocks, atmosphere, and the bodies and cells of living things

The Carbon Cycle

and endlessly move between one location and the others

Page 3: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

In the atmosphere

carbon atomsare found in

CO2

Some of these carbon atoms are taken in by plantsand used to synthesize molecules like sugar and starch

The Carbon Cycle

Page 4: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

6 CO2 + 6 H2O + Sunlight C6H12O6 + 6 O2

Notice that 6 carbon atomswere removed from the atmosphere

The Carbon Cycle involves Photosynthesis

and end up in this molecule of glucose in a plant

Page 5: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

Thus, we canthink of

photosynthesisas a first step in

the cycling of carbon

Photosynthesis is the major means by which carbon atomsleave the atmosphere

and become part of the molecules making up living things

The Carbon Cycle involves Photosynthesis

Page 6: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

At any given time, many tons of carbon atoms

are temporarily locked up in the bodies and molecules of living things

Page 7: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

How do carbon atoms return to the atmosphere?

Cellular respiration Oxidation Combustion of wood and fossil fuels

There are several ways

Page 8: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

1. Summary of Cellular Respiration

6 CO2 + 6 H2O + energyC6H12O6 + 6 O2

and the carbon atoms return to the atmosphere as CO2

When plants and animals carry out cellular respiration, they break

down sugars and similar molecules to extract their energy

All three processes can be summarized by the same equation

Page 9: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

2. Summary of Oxidation

6 CO2 + 6 H2O + energyC6H12O6 + 6 O2

the carbon atoms return to the atmosphere as CO2

When molecules that containcarbon react with oxygen

All three processes can be summarized by the same equation

Page 10: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

6 CO2 + 6 H2O + energyC6H12O6 + 6 O2

But it also releases tons of CO2 to the atmosphere

When we burn wood or fossil fuels

…combustion…the carbon atoms in their

moleculesare oxidized rapidly

All three processes can be summarized by the same equation

This releases a lot of energythat we can use

3. Combustion of wood and fossil fuels

Page 11: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

SUMMARY

During photosynthesis, carbon atoms leave the atmosphere and enter the biosphere

6 CO2 + 6 H2O + Sunlight C6H12O6 + 6 O2

During cellular respiration, carbon atoms return to the atmosphere

6 CO2 + 6 H2O + energyC6H12O6 + 6 O2

Page 12: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

How do the summary equations for photosynthesisand cellular respiration differ from one another?

Compare and Contrast

6 CO2 + 6 H2O + Sunlight C6H12O6 + 6 O2

6 CO2 + 6 H2O + energyC6H12O6 + 6 O2

Answer - They are the reverse of each other

Page 13: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

CO2 levels in earth’s

atmosphere are increasing

steadily today

What is the source of all this extra CO2?

Answers

Deforestation and Combustion of wood and fossil fuels

Page 14: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

Name three importantfossil fuels

Oil Coal Natural gas

When plants of the past removed CO2 from the atmosphere, sometimes they did not burn or decay, but

were covered with sediments to become fossil fuels

Page 15: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

Today we burn fossil fuels to

release the energy captured by

photosynthesis in the distant past

The trouble is,

we are also releasing all that CO2

that photosynthesis removed from earth’s atmosphere in that same distant past

Page 16: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

Atmospheric

CO2

Sugars andorganic molecules

in living things

Photosynthesis

Summary Drawing of the Carbon Cycle

Key Components:

Cellular Respiration

Page 17: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

Atmospheric

CO2

Sugars andorganic molecules

in living things

Photosynthesis? ? ? ? ? ? ? ? ? ? ?

What processes can return CO2 to the atmosphere?

Cellular respiration Deforestation Combustion of wood and fossil fuels Oxidation of organic molecules

Page 18: The Carbon Cycle. The carbon atoms that make up DNA, proteins, and other molecules of life Commonly cycle between earth’s rocks, atmosphere, and the bodies.

Modeling Human Impact on Earth’s Carbon Cycle

Modeling Human Impact on Earth’s Carbon Cycle

Carbon cycle processes - geosc.psu.edudmb53/models/Carbon cycle processes.pdf · Carbon Cycle Processes An overview of processes depicted in a STELLA model of the global carbon cycle.

Carbon cycle processes - geosc.psu.edudmb53/models/Carbon cycle processes.pdf · Carbon Cycle Processes An overview of processes depicted in a STELLA model of the global carbon cycle.

Carbon-nitrogen interactions regulate climate-carbon … · Carbon-nitrogen interactions regulate climate-carbon cycle ... Carbon-nitrogen interactions regulate climate-carbon cycle

Carbon-nitrogen interactions regulate climate-carbon … · Carbon-nitrogen interactions regulate climate-carbon cycle ... Carbon-nitrogen interactions regulate climate-carbon cycle

Global Warming and the Hydrological Cycle - UC SAN …aerosols.ucsd.edu/classes/COSMOS2013_Lecture3_Norris.pdf · Water Cycle Game Players • Earth’s Surface • Earth’s Atmosphere

Global Warming and the Hydrological Cycle - UC SAN …aerosols.ucsd.edu/classes/COSMOS2013_Lecture3_Norris.pdf · Water Cycle Game Players • Earth’s Surface • Earth’s Atmosphere

Introduction to Bioenergy - Dongguk...Introduction to Bioenergy 1 1. Global Warming and Carbon Cycle Carbon Cycle Carbon cycle Carbon cycle is the biogeochemical cycle by which carbon

Introduction to Bioenergy - Dongguk...Introduction to Bioenergy 1 1. Global Warming and Carbon Cycle Carbon Cycle Carbon cycle Carbon cycle is the biogeochemical cycle by which carbon

presented by Carbon Dude Carbon Dioxide basis of carbon cycle comprises 0.03% of earth’s atmosphere usually more CO 2 in city air than country air product.

presented by Carbon Dude Carbon Dioxide basis of carbon cycle comprises 0.03% of earth’s atmosphere usually more CO 2 in city air than country air product.

Ecological Cycles. Three types of cycles Water Cycle Water Cycle Carbon Cycle Carbon Cycle Nitrogen Cycle Nitrogen Cycle.

Ecological Cycles. Three types of cycles Water Cycle Water Cycle Carbon Cycle Carbon Cycle Nitrogen Cycle Nitrogen Cycle.

GLOBE Carbon Cycle: The Carbon Cycle

GLOBE Carbon Cycle: The Carbon Cycle

Important science questions addressed by the NASA Carbon Cycle and Ecosystems program include “How are the Earth’s carbon cycle and ecosystems changing.

Important science questions addressed by the NASA Carbon Cycle and Ecosystems program include “How are the Earth’s carbon cycle and ecosystems changing.

U.S. Carbon Cycle Science Program & Carbon Cycle Interagency Working Group

U.S. Carbon Cycle Science Program & Carbon Cycle Interagency Working Group

The Carbon Cycle & The Carbon Silicate Cycle

The Carbon Cycle & The Carbon Silicate Cycle

Carbon Cycle Key points. Carbon Cycle geos.ed.ac.uk.

Carbon Cycle Key points. Carbon Cycle geos.ed.ac.uk.

Carbon Cycle 1.Photosynthesis role in carbon cycle? 2.Respiration’s role in carbon cycle? 3.Decomposition by bacteria in soil role in carbon cycle?

Carbon Cycle 1.Photosynthesis role in carbon cycle? 2.Respiration’s role in carbon cycle? 3.Decomposition by bacteria in soil role in carbon cycle?

Cycling of Matter Earth’s Spheres Water cycle Photosynthesis & Cellular Respiration Carbon cycling Nitrogen cycling Phosphorus cycling.

Cycling of Matter Earth’s Spheres Water cycle Photosynthesis & Cellular Respiration Carbon cycling Nitrogen cycling Phosphorus cycling.

Carbon Cycle!

Carbon Cycle!

The Carbon Cycle and Climate Change€¦ · Figure Carbon Cycle and Climate Change.2 Earth’s interrelated systems and their major carbon reservoirs. 38557_01_body.qxd 12/23/08 12:52

The Carbon Cycle and Climate Change€¦ · Figure Carbon Cycle and Climate Change.2 Earth’s interrelated systems and their major carbon reservoirs. 38557_01_body.qxd 12/23/08 12:52

LATE NORIAN-RHAETIAN CARBON CYCLE PERTURBATIONS: …paduaresearch.cab.unipd.it/10197/1/Mariachiara_Zaffani_tesi.pdf · future evolution of Earth’s climate should be integrated with

LATE NORIAN-RHAETIAN CARBON CYCLE PERTURBATIONS: …paduaresearch.cab.unipd.it/10197/1/Mariachiara_Zaffani_tesi.pdf · future evolution of Earth’s climate should be integrated with

Improving Carbon Cycle Projections for Better Carbon ... · Improving Carbon Cycle Projections for Better Carbon Management - Eos ...

Improving Carbon Cycle Projections for Better Carbon ... · Improving Carbon Cycle Projections for Better Carbon Management - Eos ...

Earth’s Geological Cycle

Earth’s Geological Cycle

Carbon cycle theme #1 The Earth’s carbon cycle has a stabilizing mechanism against sudden addition of CO 2 to the atmosphere – About 50% of carbon emission.

Carbon cycle theme #1 The Earth’s carbon cycle has a stabilizing mechanism against sudden addition of CO 2 to the atmosphere – About 50% of carbon emission.