What is Nutrient Cycling?
•
•
•
Biogeochemical cycles:: passage of ______________________
from one organism to another in the biosphere.
Nutrients are finite (not like the Sun which supplies constant
energy), so they must be ______________ through various parts of
nature.
– Relies heavily on ______________ and movement through
the cycle (not getting “stuck” in one area)
The Major Biogeochemical Cycles
Cycles: _________________________
Carbon Cycle
Carbon cycles through the ecosystem mainly by . . .
1. ___________________ takes carbon out of the
atmosphere
in the form of CO2 (plants)
2. ___________________ puts carbon into the atmosphere in
the form of CO2 (all living organisms)
Besides photosynthesis, why is it important to have CO2 in the
atmosphere?
•
Many gases found in Earth’s atmosphere help trap _________
•
This works like a greenhouse, so it is called the
___________________________________________________
•
This is __________________
because Earth would be too cold for life
without those gases
•
___________ is one of the gases in the atmosphere that contributes
to the ______________________ effect.
Human impact on the CARBON CYCLE
•
___________________ of
___________________ burning of coal,
oil, and natural gas adds extra CO2 to the
atmosphere
•
_________________ cutting down of
large areas of ________ (reduces
the amount of ______________
_____________________
, leaving more CO2 in the atmosphere)
Why should we be concerned about adding more CO2 to the
atmosphere?
Too much CO2 can cause changes in ___________________ by making the
Earth too ___________________.
Why should we care if the Earth is getting warmer?
Even if Earth warms by only a few degrees, there will be big impacts on _______________________ and
___________________________ all over the planet.
Examples: _______________________
___________________________
_______________________
In addition to global warming, how else does combustion affect the atmosphere and
ecosystems?
• Combustion releases __________________ and __________________ into the atmosphere.
This is BAD because the nitrogen and sulfur particles combine
with ______________
____ in the atmosphere to
form _________ __________.
Effects of ACID RAIN
1. Damages ______________,
_______________ and
_________________ of trees.
2. Changes the pH of rivers/streams
which may ________________
plants &animals in the water.
3. Damages ___________________, _____________________ and _________________.
Effects of volcanic eruptions on the atmosphere & ecosystems
•
Release _____________ into the atmosphere which help forms __________________.
________________
•
Extremely large eruptions may release enough ____________ into the atmosphere to
block some __________________ _____________________________________
Name of Cycle:
Major Players/Importance of
Cycle:
Human Impacts on Nutrient Cycle:
Water
Nitrogen
Recap:
Remember,
Energy __________________ and
Nutrients __________________!
Label the Parts of the Carbon Cycle Below.
Word Bank: Primary, Higher-level,
Cellular Respiration, Deomposers, Burning,
and Photosynthesis.
A) _________________________
B) _________________________
C) _________________________
D) _________________________
E) _________________________
F) _________________________
Where is most of the Carbon stored?
How does the use of fossil fuels affect the Carbon Cycle?
How would deforestation further affect the Carbon Cycle?
Refer to the following picture of the Nitrogen
Cycle as you answer the following questions.
What type of consumer is essential for the
function of the Nitrogen cycle?
____________________________________
Why is the Nitrogen cycle important? (What
contains Nitrogen?)
____________________________________
Briefly explain this idea:
“Energy Flows and Nutrients Cycle.”