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Do now - Quick review

Do now - Quick review. Under the Earth’s organization A pack of wolves would represent what? Answer - Population The Tundra would represent what? Answer - Biome. Reminder if needed. The Earth’s organization with examples Individual organism - Wolf Population – Pack of wolves

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Do now - Quick review

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  1. Do now - Quick review • Under the Earth’s organization • A pack of wolves would represent what? • Answer - Population • The Tundra would represent what? • Answer - Biome

  2. Reminder if needed • The Earth’s organization with examples • Individual organism - Wolf • Population – Pack of wolves • Community – Wolves in an area such as Woodstock, as well as with other animals. • Ecosystem – Northeastern portion of the US. All things living there. • Biome – Tundra – everything contained in that area • Biosphere – The planet includes all living and non-living

  3. Homework • From the textbook, read pages 73 to 78 (relax most of those pages are diagrams and / or pictures). • Be able to explain a food web and food chain. Simply defining it will not cut it. • Lab report due Thursday. Typed and in class. We will do a quick review of material then cover the Winogradsky lab

  4. Quick review • What is an Autotroph? Give an example • Answer – Self-feeder. Any kind of plant or tree. Also, does it have to be a green leaf type of organism? • No, remember • at the bottom of the • ocean use • chemicals called • Chemosynthesis

  5. Quick review • Chemosynthesis

  6. Quick review • Chemosynthesis with equation

  7. New Material • Chemosynthesis equation • What goes into the organism after the organism breaks down the carbon dioxide, the water, and the hydrogen sulfide. It will release sugar (energy) and Sulfur.

  8. Winogradsky Column Lab • Get your information about the Winogradsky lab • Make observations about: • What color is the water? • What did you observe about the mud? • Where is the jar located? • What besides the information above did you observe

  9. Winogradsky Column purpose • Purpose of the lab: • The Winogradsky column is a miniature, self-contained ecosystem that in many ways models ecological conditions found in a typical pond or lake. Spring thaw results in a mixing of pond or lake water so that the water is more or less uniform at different depths. As summer progresses gradients begin to form in the water column (light gradient, temperature gradient, nutrient, O2 and H2S concentration gradients). These gradients result in a complex interaction of microbes with their environment and with one another resulting in a series of community successions and, ultimately, stratification of microbial populations in the water column.

  10. Winogradsky Column Lab • Observations & Data • This section should include only those things that you saw, heard, touched, or smelled (taste is out since we NEVER taste anything in a science lab). This includes both quantitative (numerical) and qualitative (sensual, not emotional) observations. Quantitative observations are best presented in data tables. Qualitative observations may be organized in table form or paragraph form. • Continued on next slide

  11. Winogradsky Column Lab • Observations & Data • The goal of this section is to present the data that was collected in the activity in a clear and easily understood format. Units are necessary for any measurement. If you are unsure about whether something should be included in the data section, ask yourself “How did I get this piece of information? What instrument did I use to collect this information?” If you are giving a value that you did not measure directly (such as density) it should not be included as data.

  12. Winogradsky Column Lab • Observations & Data • What did you find?

  13. Winogradsky Column Lab • Observations & Data • What did you find? • Analysis of Data • This is the section where you will show any calculations that you made using the data you collected. Did we have any?

  14. Winogradsky Column Lab • Conclusions • This is the section of your report where you discuss how the purpose of the activity relates to the analysis of your data. In other words, what did you learn? Stick to the facts, no not comment on whether or not you enjoyed the activity. Be specific in your statements. If the results of the activity were not satisfactory, suggest how the activity could be improved to give better data. Did the activity raise questions that cannot be answered with the data you collected? This is the place to mention them. Remember, conclusions are connections that are not obvious on the surface.

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