C4 Plants
   Biomass
   Photosynthesis
   Water Use Efficiency

Calcification
   Corals
   Other Marine Organisms

CAM Plants

Carbohydrates

Carbon Based Secondary Compounds

Carbon Dioxide
   Summary
   Atmospheric Residence Time
   Correlations with Temperature
   Health Effects
      See Health Effects (CO2)
   History
   Seasonal Atmospheric Cycle
   Sources
   Springs
   Urban CO2 Dome
      Miscellaneous
      Non-U.S. Cities
      U.S. Cities
         Phoenix, AZ, USA
         Other U.S. Cities
   Very High Concentrations
      Aquatic Plants
      Terrestrial Plants
   Very Low Concentrations

Carbon Sequestration
   Agriculture
   CO2 x Temperature Interaction
   CO2 x UV-B Interaction
   Decomposition
      Agriculture
      Desert Species
      Grassland Species
      Processes and Properties
      Woody Plants: Conifers
      Woody Plants: Deciduous Trees
   Forests
   Fungi
   General
   Grasslands
      Biomass (Individual Species)
      Biomass (Mixed Species)
      Biomass (Whole Communities)
      Decomposition
      Fungal Interactions with Roots
      General
      Soil
      Soil Moisture
      Water Use Efficiency
   Leaf Physiology
   Marine Ecosystems
   Missing Carbon
   Nitrogen Effects
   Oceans
   Peatlands
   Regions
   Soils
   Temperature Effects
   Urban Vegetation
   Water Bodies

Carbon Starvation

Carbonyl Sulfide

Citrus Trees

Chlorophyll

Climate Change
   CO2-Temperature Correlations
   Cooling Trends
   Deep Water Formation
   Feedback Factors
      Biophysical
         Carbonyl Sulfide
         Diffuse Light
         Dimethylsulfide
         General
         Iodocarbons
         Methane (see Letter "M")
         Nitrous Oxide
         Tannins (see Letter "T")
      Clouds
      Other
      Thermohaline Circulation
   Forcing Factors
      Aerosols (see Letter "A")
      Air Pollution (Non-Ozone)
         Effects on Climate
         Effects on Health
         Effects on Plants
      Non-CO2 Greenhouse Gasses
      Solar (see Letter "S")
      Tidal
      Volcanoes (see Letter "V"
   Rapid Change
      Biological Systems
      History
      Temperature Effects
      Thermohaline Circulation
   Regime Shift

Climate History
   CO2-Temperature Correlations
   Geologic Epochs
   Glacial Cycles
   Graphs
   Holocene (see Letter "H")
   Little Ice Age (see Letter "L")
   "Little" Medieval Warm Period
   Medieval Warm Period (see Letter "M")
   Overview
   Recent Temperature Trends

Climate Models
   Basic Characteristics
   Inadequacies
      Biology
      Clouds
      ENSO
      General
      Ice Sheets
      Monsoons
      Oceans
      Permafrost
      Precipitation
      Radiation
      Sea Ice
      Soil Moisture
      Storms
      Streamflow
      Wind

Climate Oscillations
   Centennial Variability
   Decadal Variability
      Arctic
      Asia
      Europe
      General
      North America
      Oceans
         Atlantic
         General
         Pacific
   Millennial Variability
      Africa
      Antarctica
      Arctic
      Asia
      Australia
      Europe
      Forcing Factors
      Hemispheric-to-Global-Scale
      North America
      Oceans
      South America

Climate Sensitivity

Clouds
   Albedo
   Condensation Nuclei
      Biological Effects
      Climatic Effects
         Anthropogenic
         Non-Anthropogenic
   Cover
   Model Inadequacies

CO2 Cycle

CO2 Dome
   Phoenix, AZ, USA
   Other U.S. Cities
   Non-U.S. Cities

CO2-Temperature Correlations

Competition
   C3 vs. C4
   General
   Invasive Species
   N-Fixers vs. Non-N-Fixers
   Weeds vs. Non-Weeds

Cooling Trends

Coral Reefs
   Bleaching
      Causes
         Disease
         General
         Pollutants
         Salinity
         Sediment
         Solar Radiation
         Temperature
         Turbidity
      Detection
   Calcification
      Corals
      Other Marine Organisms
   Early Life Stages
   General
   Great Barrier Reef
   History
      Caribbean Sea
      General
      South Pacific Ocean
   Response to Sea Level Rise
   Response to Solar Radiation Stress
   Responses to Temperature Stress
      Bacterial Shuffling
      Symbiont Shuffling
      Thermal Adaptation
      Miscellaneous
      Recovery and Resilience
   Ocean Acidification
      Laboratory Studies
      Field Studies
   Simultaneous Ocean Acidification and Warming
      Review Papers
      Laboratory Studies
      Field Studies

Cosmic Rays

Cycads

Cyclones (see Letter "S" under Storms)