20.5 Material Cycling In Ecosystems (Carbon cycle) Flashcards
Through which type of producers does carbon enter the food chain?
Autotrophs
In what form of carbon do autotrophs capture?
Carbon dioxide (air) / bicarbonate ions (water)
What are the two ways carbon is transferred between trophic levels and decomposers
Feeding (consumers) and decomposition
Who uses organic matter in dead bodies or waste material of organisms as food?
Decomposers
Methods by which carbon dioxide is returned to the atmosphere and oceans
Respiration, decomposition, combustion, carbonates reaction with acids in water/ volcanic eruption
How is carbon inside organic matter changed into carbon dioxide?
Respiration
How do decomposers convert carbon in organic matters into carbon dioxide?
Decomposition of organic matter
How does combustion contribute towards carbon cycle?
Dead bodies of organisms may turn into fossil fuels, carbon inside FF becomes carbon dioxide during combustion
What does limestone contain?
Carbonates
When do carbonates turn into carbon dioxide?
React with acids in water or when heated under high pressure during volcanic eruption
How does carbon dioxide formed from limestone reactions released into air?
Co2 dissolved in water is diffused into the air
The way in which carbon in producers (in the form of organic matter) is transferred to consumers at a higher trophic level
Feeding
How is CO2 removed from atmosphere/ oceans and enter food chain?
Photosynthesis by producers turn carbon into organic matters (carbohydrates)
What is the equation of photosynthesis ?
6CO2(carbon dioxide) + 6H20 (water) -(light)-> C6H12O6 (glucose) + 6O2 (oxygen)
Product of respiration
Carbon dioxide, water, energy
