Abiotic Cycles

1
Abiotic Cycles
2
Water Cycle

• Water exists in the ocean (75), rivers, lakes
  streams, underground aquifers, and the
  atmosphere.
• The water cycle is the how water moves between
  these places.
• 5 ways

3
Evaporation

• water returns to the atmosphere from lakes,
  rivers, oceans, etc in the form of vapor. 

4
Transporation

• water returning to the atmosphere in the form of
  vapor from plants

5
Condensation

• Water vapor becomes liquid in
• the form of clouds

6
Precipitation

• Liquid water from clouds falls back to earth as
  rain, sleet, snow, or hail

7
Run Off

• Water from precipitation flows back into lakes,
  rivers, streams, ocean, etc.

8
Carbon Cycle

• Carbon cycles from the atmosphere to organisms
  and back

9
Photosynthesis

• Plants use carbon in carbon dioxide from the
  atmosphere to make glucose.

10
Cell Respiration

• Consumers get carbon from glucose by eating
  plants.
• Consumers then use the glucose to make ATP and
  carbon is returned to the atmosphere as carbon
  dioxide.

11
Fossil Fuels

• When organisms die, their bodies have trapped
  carbon in them.
• They eventually decay into petroleum
• When we burn petroleum based fossil fuels (gas,
  oil) we release the trapped carbon as carbon
  dioxide.

12
Nitrogen Cycle

• Nitrogen cycles from the atmosphere into the
  ground, into organisms, and back.
• We use nitrogen to make our nucleic acids
• Almost 80 of air is made of nitrogen, but it is
  in a form we cannot use.

13
Nitrogen Fixation

• Bacteria that live in soil and in some plant
  roots (beans, peas) can turn nitrogen from the
  air into a form plants can absorb.
• Lighting can also do fixation

14
Ammonification

• Consumers get nitrogen by eating the plants
• When consumers die or release waste, decomposers
  return nitrogen to the soil (ammonification)

15
Denitrification

• Some bacteria specialize in breaking down
  nitrates and returning nitrogen to the atmosphere.