Ecology: Decay And The Carbon Cycle Flashcards
What are decomposers?
Organisms that breakdown, dead plants and animal matter, returning nutrients to the environment
What are detritivores? Give two examples.
Organisms that consume dead and decaying matter, aiding decomposition such as dung beetles and earthworms
How do microorganisms aid decomposition?
They secrete enzymes that digest decaying material
What environmental condition speed up decomposition?
Warm, moist conditions, as they favor decomposers’ growth and activity
What happens in anaerobic conditions during decay?
Partial decay occurs, producing materials like peat
What is the carbon cycle?
The process by which carbon circulates among the air, organisms, earth, and oceans
How is carbon removed from the atmosphere?
Through photosynthesis by green plants and algae
In what organic molecules is carbon stored in living organisms?
Carbohydrates, proteins, and lipids
How does carbon move from plants to animals?
When animals eat plants, carbon becomes part of their bodies
Name three ways carbon is returned to the atmosphere
Respiration, decomposition, and combustion of organic materials
How does respiration contribute to the carbon cycle?
All organisms respire, releasing CO2 into the atmosphere
What happens to carbon when organisms die?
Decomposers break down their bodies, returning carbon to the environment
How does combustion affect the carbon cycle?
Burning organic materials releases CO2 back into the air
Why is the carbon cycle important for life?
It ensures a continuous supply of carbon for all living organisms
How have humans disrupted the carbon cycle?
Through burning fossil fuels and deforestation
How does the burning fossil fuels affect atmospheric CO2 levels?
It releases carbon stored for millions of years, increasing CO2 levels
How does deforestation impact the carbon cycle?
Fewer trees absorb CO2 via photosynthesis, increasing atmospheric CO2
What is the link between increase CO2 and climate change?
More CO2 enhances the greenhouse effect, leading to global warming
Name four strategies to reduce human impact on the carbon cycle
. Reducing fossil fuel use
. Carbon capture and storage
. Reforestation
. Promoting sustainable practices
