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Biodiversity and Conservation . Prokaryota : A Kingdom Divided. Archaea  Possible oldest forms of life Extremophiles Live in high temps, pH, salinity Bacteria  Live pretty much everywhere…even all over and inside you Features: No nucleus ; have nucleoid ( ball of DNA )

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prokaryota a kingdom divided
Prokaryota: A Kingdom Divided
  • Archaea
    • Possible oldest forms of life
    • Extremophiles
      • Live in high temps, pH, salinity
  • Bacteria
    • Live pretty much everywhere…even all over and inside you
  • Features:
    • No nucleus; have nucleoid(ball of DNA)
    • Circular chromosome/ plasmids
    • No-membrane bound organelles
      • Mitochondria, Goli, etc…
    • Small ribosomes
    • Most are unicellular
protoctista
Protoctista
  • Group of leftovers
  • Anything eukaryote that is not really a plant, fungi, or animal is a protoctist
  • Features:
    • Eukaryotic; have a nucleus and membrane-bound organelles
    • Mostly unicellular
    • Animal-like; no cell wall and heterotrophs(eat things)
    • Plant-like; photosynthetic
fungi
Fungi
  • Look like plants but do not act like plants
  • Do NOT do photosynthesis; they are heterotrophs
  • Features:
    • Eukaryotic
    • Unicellular or multicellular
    • Spore reproduction cycle
    • Cell walls BUT made of chitin not cellulose
    • Never have cilia/flagella
plantea
Plantea
  • Look like plants because they are…
  • Features:
    • Multicelluar eukaryotes
    • Do photosynthesis; autotrophes
    • Cell walls made from cellulose
    • Some parts can have flagella
animalia
Animalia
  • Don’t look like plants because they aren’t…
  • Okay, sometimes they look like plants
  • Features:
    • Multicellular eukaryotes
    • Heterotrophes; no photosynthesis
    • No cell walls; full motion bodies
    • Some cells have cilia/flagella
breakdown review
Breakdown Review
  • Prokaryota
  • Protocista
  • Fungi
  • Plantae
  • Animalia
  • Protocista
  • Plantae
  • Prokaryota
  • Protocista
  • Fungi
  • Animalia
this island earth
This Island “Earth”
  • What are the limiting factors on an island?
    • Space, food, fresh water…
  • The Earth is an closed system:
    • Energy is exchanged but matter is not exchanged
    • The resources on the Earth are limited
  • Most population are kept under control by natural limits on growth
    • Food, space, competition, predation, disease…
  • Humans have developed a new way to live by taking control of our environment
  • Since nature cannot complete control our growth, it is our responsibility to do it ourselves
humans take control
Humans Take Control
  • What is man’s greatest invention?
    • Agriculture
  • Growing our own food means we are not limited by nature as much
  • What happened after agriculture started?
  • Society formed jobs, hierarchy, and economics are born
  • Cities are created to increase trade and wealth
  • Suburbs grew from cities (urban sprawl) because they are safer and cleaner
  • Cities fall apart (urban decay) and humans expand outward into nature
rapid growth
Rapid Growth
  • What major moments promoted the sudden jumps in human population?
  • Industrial Revolution major growth in industry created more money, more jobs, and better education
  • Understanding Medicine money and growth gives us the resources to improve science which lead to better medicine and longer lifespans
  • Computer Age computers take technology/science to a place never thought possible and society raises its standard of living
too much of everything
Too Much of Everything
  • Why is a growing population AND higher standards the path to uncontrolled environmental damage?
  • More food is needed people want meat but 5lbs of wheat is needed to make 1lb of meat
  • More technology built on rare elements that will get harder to find forcing us to dig deeper into the Earth
  • More energy both 1 and 2 mean more energy is needed for each person to live the life they want
what is the answer
What is the Answer?
  • Sustainable Development
    • Society must balance growth with the resources that are available, growth in society, and growth in the economy
  • 2 types of resources:
  • Renewable resources can be replaced in a short length of time
    • Trees, animal populations, alternative forms of energy…
  • Nonrenewable resources can be replaces but will take longer than society can wait
    • Coal, oil, natural gas, rivers/lakes
group discussion
Group Discussion
  • Break up into 3groups
  • Read the question and discuss
  • Write down your thought and be prepared to explain your answers to the class
discussion questions
Discussion Questions
  • Group 1:
    • In what countries is sustainable development most important? Explain why.
  • Group 2:
    • How might you stop or slow down the growth of cities as more and more people move to cities looking for work?
  • Group 3:
    • Do you think governments/society should limit the excess to meat products since raising animals has such a negative impact on an environment? Why?
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