Transcript non-living - Effingham County Schools

Cycles
•
Life depends on the cycling of water
and nutrients through the biosphere.
Water Cycle
•
•
•
The water cycle can be
impacted by human
activities at many points in
the cycle.
Pollution impacts the
amount of available water
for drinking, irrigation, and
recreation.
Cutting down forests
reduces the amount of
water that returns to the
atmosphere by
transpiration.
Water
• Water is dropped to Earth as rain, sleet,
snow, etc. This is precipitation.
• Water may runoff back into the ocean and
evaporate to return to atmosphere.
• Water may also seep into ground and stay
in aquifers until consumed or taken in by
plants.
• Plants lose water through transpiration in
their leaves.
Nitrogen Cycle
•
The Nitrogen Cycle is necessary for organisms
to make proteins.
Nitrogen Cycle
• Nitrogen is important for our bodies and soil
nutrient.
• It is naturally found in atmosphere (78%)
• Nitrogen gas is useless to plants and plants
must have it converted to a liquid form through a
process called nitrogen fixation.
• Bacteria are responsible for Nitrogen Fixation for
plants.
• Some live at the roots of plants (legumes) and
others are found in soil near roots.
• Farmers will also apply nitrogen fertilizer or
organic fertilizer to soil to help their crops grow.
Nitrogen Cycle
• Nitrogen is recycled from the bodies of
dead organisms or organic matter by the
bacteria through decomposition.
• Nitrogen enters living things through
nitrogen fixation in plants.
Carbon and Phosphorus Cycle
Carbon Cycle
• Carbon is created by plants through
photosynthesis. They take in CO2 and
convert it to Glucose (C6O12H6.)
• We eat plant material and release more
CO2 than can be recycled.
• Plants also are converted into fossil fuels.
The burning of these fuels release the
carbon back into atmosphere where they
can again be recycled.
Phosphorus Cycle
• Phosphorus is naturally found in Earth’s
crust.
• Plants take in P through soil and water.
• Animals receive P by eating plants to build
teeth and bone material
• Eventually, animals decompose and
bacteria return the P back to the soil.
Biogeochemical Cycles
Water, Carbon, Nitrogen & Phosphorus Cycles Poster
Choose ANY cycle listed above and create a poster.
You may work in groups (no more than 3 people per
group). You may use your notes, textbook or
internet to research your chosen cycle.
Include:
• Labeled diagram or drawing to show the cycle. (30
pts for neatness and correct labels)
• ONE paragraph to describe the cycle in your own
words and how humans affect your cycle. (20pts for
accurate description and affect)
• 10 pts for group work and staying on task.
Global Warming video
• http://video.nationalgeographic.com/video/
player/animals/reptiles-animals/turtlesand-tortoises/shark_tiger_turtles.html
• Decomposition video:
• USV: Enviro-Tacklebox: Module 05:
Processes and Cycles in the Environment:
Rotten But Not Forgotten
Factors That Influence
Ecosystems
• Biotic factors - living factors that are a part of an
ecosystem.
• Animals
• Plants
• Fungi
• Bacteria
• Protists
• Abiotic factors - non-living factors that are a part
of an ecosystem.
• Temperature
• Precipitation
• Nutrient availability
• Wind
• Humidity
• Soil type