The Biogeochemical Cycles Flashcards
Earth’s subsystems consist of several compounds like WATER, NITROGEN, CARBON, AND OXYGEN, which ARE essential to sustain life.
TRUE
Interaction of organisms allow RECYCLING of H2O, N, C, AND O. This makes the earth a self-regulating system.
TRUE
What is biogeochemical cycles?
The complete path an element or a compound takes
through the four subsystems of Earth
These processes are
essential for the maintenance of life on Earth.
TRUE
What are the 4 cycles in biogeochem?
water cycle
nitrogen cycle
carbon dioxide cycle
oxygen cycles
This is the movement of water from the ocean to the atmosphere to land and back to ocean.
WATER CYCLE
What are the 3 processes of the water cycle?
- evapotranspiration
- condensation
- precipitation
WC evapotranspiration
water from the bodies of water and moisture from moist soil evaporates.
liquid turns into gas (water vapor)
water vapor will go into the atmosphere! bye, bye hydrosphere!
WC condensation
the water vapor will form tiny droplets in the atmosphere = CLOUD FORMATION
pwede ring manifestation ng condensation yung fogz
yung water vapor na naging droplets, water droplets yun
WC precipitation
releasing of water droplets in form of hail, sleet, rain, or snow!
Around 60% of precipitation on land EVAPORATES BACK to the
atmosphere each year while 40% RETURNS to the ocean as runoff.
TRUE
what are the 4 processes of the nitrogen cycle?
- Nitrogen Fixation
- Nitrification
- Ammonification
- Denitrification
what is the nitrogen cycle?
MOVEMENT OF NITROGEN BETWEEN THE SPHERES
NC Nitrogen Fixation
atmospheric nitrogen is not for direct use. kailangang convert.
nitrogen fixation is the conversion of atmospheric nitrogen to ammonium compounds aka biologically available nitrogen.
nitrogen-fixing bacteria is a prokaryote used to break down atmospheric N.
TRUE
NC Nitrification
Converting the ammonium compounds/ammonia into nitrite and then to nitrate.
Nitrifying bacteria converts ammonia to nitrite and nitrate!
plants and algae need nitrates. they make proteins out of nitrates
Plants, algae, and bacteria then convert the inorganic forms of nitrogen compounds through different chemical reactions.
TRUE
NC Ammonification
fungi and prokaryotes decompose the dead tissue of organisms and release the inorganic nitrogen back into the ecosystem as ammonia.
yung pooped/excreted wastes ng kumonsumo nung plants na may proteins (e.g., rabbits) magdedecay. pag decayed na, magiging ammonia na siya ulit
Ammonification is also called?
Nitrogen Mineralization
NC Denitrification
releasing nitrogen back to the atmosphere.
may mga nitrate na hindi nasasama sa mga nitrate na ginamit for plants. yung mga natira, ibabalik sa bacteria (denitrifying bacteria) tapos marerelease na sila sa atmosphere as either ammonia, nitrate, or molecular nitrogen.
nitrogen cycle
atmosphere -> soil (geosphere) -> animals (biosphere) -> soil ulit then cycle starts again
TRUE
OC Oxygen is distributed among reservoirs including
the atmosphere, oceans, freshwater
environments, soils, and groundwater
TRUE
OC What is the major mechanism that produces oxygen gas which occurs in plants, algae, and in two groups of prokaryotes (cyanobacteria and prochlorophytes).
PHOTOSYNTHESIS!
OC This also takes place between the atmosphere and the surface waters.
DIFFUSION
