Nutrient Cycling (LC 2027) (Leaving Cert Biology): Flashcards
📚Flashcards
Practise the cards
15 cards from this deck
ShowHide
Practise the cards
15 cards from this deck
Natural recycling processes in ecosystems
Natural recycling processes in ecosystems
Biogeochemical cycles
Building block of all organic molecules
Building block of all organic molecules
Carbon
Process removing CO2 from atmosphere
Process removing CO2 from atmosphere
Photosynthesis
Process releasing CO2 to atmosphere
Process releasing CO2 to atmosphere
Respiration
Areas absorbing more carbon than they release
Areas absorbing more carbon than they release
Carbon sinks
Atmospheric CO2 rise over past 200 years (%)
Atmospheric CO2 rise over past 200 years (%)
0.028% to over 0.042%
How cattle release 90% of their methane
How cattle release 90% of their methane
Through burping
% of atmosphere made up of nitrogen gas
% of atmosphere made up of nitrogen gas
78%
Converting gas into usable nitrogen compounds
Converting gas into usable nitrogen compounds
Nitrogen fixation
Structures where N-fixing bacteria live on roots
Structures where N-fixing bacteria live on roots
Root nodules
2-step process: ammonia → nitrites → nitrates
2-step process: ammonia → nitrites → nitrates
Nitrification
Converting nitrates back to nitrogen gas
Converting nitrates back to nitrogen gas
Denitrification
Energy source for nitrifying bacteria
Energy source for nitrifying bacteria
Chemical reactions (chemosynthetic)
Excess nutrients causing algal blooms in water
Excess nutrients causing algal blooms in water
Eutrophication
Why phosphorus is a sustainability concern
Why phosphorus is a sustainability concern
Cannot be replaced; finite supplies