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Biodiversity and Conservation

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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Biodiversity and Conservation

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  1. Biodiversity and Conservation

  2. 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

  3. 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

  4. 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

  5. Plantea • Look like plants because they are… • Features: • Multicelluar eukaryotes • Do photosynthesis; autotrophes • Cell walls made from cellulose • Some parts can have flagella

  6. 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

  7. Breakdown Review • Prokaryota • Protocista • Fungi • Plantae • Animalia • Protocista • Plantae • Prokaryota • Protocista • Fungi • Animalia

  8. 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

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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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