Sci207 W3 Lab Report Answers

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Lab 3 – Biodiversity Demonstration 1: Interdependence of Species Table 1: Interdependence of Species Results Round Species Missing (Bead Color and Name) 1 Color Yellow – Name Bees 2 Color Blue - Name Humans 3 Color Red – Name Flowers 4 Color White - Name Lichen POST LAB QUESTIONS 1. Explain how the ecosystem was affected by the missing species for each round of the demonstration. a. Round 1 = Trees and plants could not be pollinated without bees. Humans would no longer have honey and foods that require pollination such as fruits would cease to exists. b. Round 2 = Humans have a very big impact on the ecosystem. Perhaps if humans did not exists there would be more of a reverse effect on the ecosystem allowing it to be more stable and flourish. c. Round 3 = Bees would go without a food source without flowers. d. Round 4 = Plants and trees would suffer in terms of necessary nutrients in the soil. Lichens provide these nutrients in the soil. 2. Provide one action we as humans engage in that leads to the extinction of each of these components. Action affecting Lichens = Lichens depend on air and water for nutrients which is affected by things such as air travel and exhaust fumes. Action affecting Trees = People cutting down trees for useable items is one main way that leads to extinction. Action affecting Flowers = People are clearing off land in order to plant crops and trees Action affecting Bees = There is intensive farming being done all around the world to keep up with the supply and demand of food. As a result this eliminate food that bees pollinate from. 3. Provide three specific actions that humans can take to minimize our impact on the ecosystem and ensure the survival of lichens, trees, flowers, and bees. 1.- People can do less that contribute to the pollution of air, water and soil and by protecting from pollutants

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