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ECOSYSTEMS




   Science
   Unit B
   Chapter 1
A system is a group of parts that
work together as a unit.

 OPEN SYSTEMS          CLOSED SYSTEMS
Most systems are       Very few systems are
 open systems. They      truly closed. Most
 take in things from     systems receive
 outside the system.     inputs and give off
 For example, a          outputs.
 terrarium takes in     A diver in a
 energy from the sun.    submarine is in an
Why do plants need      almost completely
 the sun’s energy?       closed system.
Explain if these systems
are open or closed.

An aquarium
a forest
a sports team
your family
an astronaunt on the Space Shuttle
an automobile
Stability

Stability comes from the word stable. The suffix
 “ity” forms nouns from adjectives and means
 “the condition or quality of”.
Stability in systems means that over time the
 changes in a system cancel each other out. For
 example if something is added, it is later taken
 out.
The system must remain in balance.
How does the grass in your yard remain stable?
Predict how this tool would help
keep your yard stable.

What are the inputs
 in a yard system?
What are the outputs
 in a yard system?
A system that is in
 balance is said to
 have what?
Ecosystems

       Groups of living things
        and the environment they
        live in make up an
        ecosystem.
       Some ecosystems include
        forests, ponds, and
        streams.
       Explain how some
        organisms can live in
        different ecosystems.
TYPES OF ECOSYSTEMS

   POPULATIONS             COMMUNITIES
A group of the same     A community of an
 species living in the    ecosystem is made up
 same place at the        of all the populations
 same time is a           that live in the same
 population.              area.
Populations live in     The plants and
 environments to          animals that live
 which they are           together depend on
 adapted.                 each other to survive.
ACTIVITY

Organize charts that
 compare how your
 needs are met in your
 community to how
 plants’ and animals’
 needs are met in their
 community.
ANALYZE THIS!

Sometimes plants and animals are
 introduced into ecosystems that are not
 native to the ecosystem.
Can you name a plant or animal that lives
 in an ecosystem that you are familiar with
 and is not native to that ecosystem?
Predict what might happen if an animal
 from the jungle were introduced into a
 forest ecosystem.
NONLIVING PARTS OF AN
     ECOSYSTEM

SUNLIGHT
AIR
TEMPERATURE
SOIL
WATER
LIVING THINGS IN
        ECOSYSTEMS

      HABITATS                NICHES
The environment that    A niche is an
 meets the needs of       organism’s role or job
 an organism is called    in the environment.
 a habitat.              Name an organism
Read the book “A         from the forest
 House is a House for     environment and
 Me” and discuss the      describe its niche in
 different habitats       that environment.
 listed.
LIVING THINGS

                           Food Chain


                              Niches
                                or
                              Roles


      Producers            Consumers                  Decomposers
   Green plants and       eat other living         feed on wastes of
    some protists              things            plants and animals or
produce their own food.     for energy.      on their remains after they die.
SUMMARY

An environment that meets the needs of
 an organism is called a habitat.
An organism’s niche is its role within that
 habitat.
As organisms carry out their roles, they
 can affect both living and nonliving parts
 of that ecosystem.

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Basic science

  • 1. ECOSYSTEMS Science Unit B Chapter 1
  • 2. A system is a group of parts that work together as a unit. OPEN SYSTEMS CLOSED SYSTEMS Most systems are Very few systems are open systems. They truly closed. Most take in things from systems receive outside the system. inputs and give off For example, a outputs. terrarium takes in A diver in a energy from the sun. submarine is in an Why do plants need almost completely the sun’s energy? closed system.
  • 3. Explain if these systems are open or closed. An aquarium a forest a sports team your family an astronaunt on the Space Shuttle an automobile
  • 4. Stability Stability comes from the word stable. The suffix “ity” forms nouns from adjectives and means “the condition or quality of”. Stability in systems means that over time the changes in a system cancel each other out. For example if something is added, it is later taken out. The system must remain in balance. How does the grass in your yard remain stable?
  • 5. Predict how this tool would help keep your yard stable. What are the inputs in a yard system? What are the outputs in a yard system? A system that is in balance is said to have what?
  • 6. Ecosystems  Groups of living things and the environment they live in make up an ecosystem.  Some ecosystems include forests, ponds, and streams.  Explain how some organisms can live in different ecosystems.
  • 7. TYPES OF ECOSYSTEMS POPULATIONS COMMUNITIES A group of the same A community of an species living in the ecosystem is made up same place at the of all the populations same time is a that live in the same population. area. Populations live in The plants and environments to animals that live which they are together depend on adapted. each other to survive.
  • 8. ACTIVITY Organize charts that compare how your needs are met in your community to how plants’ and animals’ needs are met in their community.
  • 9. ANALYZE THIS! Sometimes plants and animals are introduced into ecosystems that are not native to the ecosystem. Can you name a plant or animal that lives in an ecosystem that you are familiar with and is not native to that ecosystem? Predict what might happen if an animal from the jungle were introduced into a forest ecosystem.
  • 10. NONLIVING PARTS OF AN ECOSYSTEM SUNLIGHT AIR TEMPERATURE SOIL WATER
  • 11. LIVING THINGS IN ECOSYSTEMS HABITATS NICHES The environment that A niche is an meets the needs of organism’s role or job an organism is called in the environment. a habitat. Name an organism Read the book “A from the forest House is a House for environment and Me” and discuss the describe its niche in different habitats that environment. listed.
  • 12. LIVING THINGS Food Chain Niches or Roles Producers Consumers Decomposers Green plants and eat other living feed on wastes of some protists things plants and animals or produce their own food. for energy. on their remains after they die.
  • 13. SUMMARY An environment that meets the needs of an organism is called a habitat. An organism’s niche is its role within that habitat. As organisms carry out their roles, they can affect both living and nonliving parts of that ecosystem.