Transcript Populations and Interactions 2/10

Recycling Matter in Ecosystems
Date: 11/26/12
pg 55-56
Know: How does the earth recycle?
Evidence: 1. Draw diagram showing how recycling in an
ecosystem is limited.
Evidence 2: Draw water Cycle (pg. 724 textbook)
Clarifying ?s
Water Cycle
Process
Information
Continuous process where H2O
moves from Earth’s surface to
atmosphere and back.
1) Evaporation – Liquid H2O
absorbs energy and changes to
gas H2O.
2) Condensation – H2O gas (vapor)
changes into liquid – droplets
collect around dust particles in air
to form clouds.
3) Precipitation (rain) – As H2O gas
(vapor) condenses the cloud
grows larger/heavier, then falls
back to earth.
Nitrogen Cycle
Free Nitrogen
in Air
Consumer eats
nitrogen in plants
Bacteria releases
nitrogen
Decomposers
break down waste
returns to soil
Bacteria in root
nodules fix free
nitrogen into
compounds
Dispersal
How?
Limits
Organisms moving from one place to
another
1. Wind/H2O- Wind blows seeds, fly,
spiders, spores.
2. Other living things- People move
plants/animals
Native species- naturally live in
the area Ex. Evergreen trees
Exotic/Invasive species –
carried to new location. Ex.
Blackberries
1. Physical barriers- H2O, mountains,
deserts are hard to cross.
2. Competition- New organism have
to find niche to survive.
3. Climate- Temperature determines
if species can survive.
• Summary
• Evidence:
• 1. Draw a picture showing the ways
recycling is limited in an ecosystem.
• 2. Draw Water Cycle (TB pg 724)