BIOGEOCHEMICAL CYCLES
Carbon
Nitrogen
Water
Phosphorus
BIOGEOCHEMICAL CYCLES
• Matter (water, carbon,
nitrogen and phosphorus) is
RECYCLED between
ecosystems.
Close your
eyes and
IMAGINE …..
BIOGEOCHEMICAL CYCLES
• Biological (life)
• Geological (rocks)
• Chemical
• Aspects of the Earth.
(Biosphere)
The Carbon Cycle
Things that TAKE IN carbon
1. Plants
(Photosynthesis)
2. All living things,
for growth.
https://www.youtube.co
m/watch?v=0Vwa6qtEih8
Things that PUT OUT carbon
1.
2.
Volcanoes
Respiration
(breathing)
Human Activities
3.
1.
2.
Burning fossil
fuels
Cutting down
trees
Carbon is important for building TISSUE, BONES and PLANTS.
The Nitrogen Cycle
1. Most nitrogen is in the Air. (Atmosphere)
2. Plants called Legumes have a bacterium that can
convert nitrogen to ammonia, Nitrogen Fixation.
3. Plants will convert ammonia to Nitrates, to make
protein.
https://www.youtube.com/watch?v=l2xC_WMvo5g
4. Consumers, eat plants and reuse the protein.
5. Living things need nitrogen to make proteins
The Phosphorus Cycle
1. Phosphorus is stored in rock, soil and minerals.
2. Rain water can wash Phosphates to the oceans.
3. Plants absorb Phosphate from soil then they
move through the food chain.
4. Phosphorus is NOT found in the atmosphere like
the other cycles. https://www.youtube.com/watch?v=RKkC2JpjaGc
5.Phosphorus is important for making DNA and RNA
The Water Cycle
1. Water moves between the ocean, atmosphere, and
land.
2. Water changing from liquid to gas is called
evaporation.
3. Plants losing water through evaporation is called
Transpiration.
4. Water falls back to land in the form of
precipitation.
5. Runoff is water running back to the ocean or a lake.
6. Seepage is water seeping (sinking) into the ground.
7.
https://www.youtube.com/watch?v=9e1ccP2P0Fk
7. ALL living things require water to survive!
QUIZ !
• 10 – 15 minutes of study time.