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| How and why do ecosystems change? |
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| This final unit serves as a culmination of understanding our biological world and how its very framework is threatened by mans ever-increasing impact. Students examine a local ecosystem depicting its food webs, identifying trophic levels, and predicting the impact that environmental changes, such as the addition of an invasive species, could have on the web. Applying their knowledge of natural selection, students identify the adaptations of species in the ecosystem, predict how this ecosystem could change over time, and recognize the benefits of biodiversity as it applies to ecosystem stability. They analyze data on topics like global warming and human population growth, engage in group discussions, and draw conclusions about man’s impact on the biosphere. |
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| STANDARD B1: INQUIRY, REFLECTION, AND SOCIAL IMPLICATIONS B1.1 Scientific Inquiry Students will understand the nature of science and demonstrate an ability to practice scientifi c reasoning by applying it to the design, execution, and evaluation of scientific investigations. Students will demonstrate their understanding that scientific knowledge is gathered through various forms of direct and indirect observations and the testing of this information by methods including, but not limited to, experimentation. They will be able to distinguish between types of scientific knowledge (e.g., hypotheses, laws, theories) and become aware of areas of active research in contrast to conclusions that are part of established scientific consensus. They will use their scientific knowledge to assess the costs, risks, and benefits of technological systems as they make personal choices and participate in public policy decisions. These insights will help them analyze the role science plays in society, technology, and potential career opportunities. B1.1A Generate new questions that can be investigated in the laboratory or field. B1.1E Describe a reason for a given conclusion using evidence from an investigation. B2.2g Propose how moving an organism to a new environment may influence it ability to survive and predict the possible impact of this type of transfer. B3.3 Element Recombination B3.3A Use a food web to identify and distinguish producers, consumers, and decomposers and explain the transfer of energy through trophic levels. B3.4 Changes in Ecosystems B3.4A Describe ecosystem stability. Understand that if a disaster such as flood or fire occurs, the damaged ecosystem is likely to recover in stages of succession that eventually result in a system similar to the original one. B3.4B Recognize and describe that a great diversity of species increases the chance that at least some living organisms will survive in the face of cataclysmic changes in the environment. B3.4C Examine the negative impact of human activities. B3.5B Explain the influences that affect population growth. Copyright © 2001-2015 State of Michigan | |
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| - How do food webs and ecological pyramids depict matter and energy relationships of an ecosystem?
- How do changes in gene pools lead to changes in ecosystems?
- What are the effects of increasing demand and decreasing supply of our natural resources?
- How is ecosystem stability threatened by man’s increasing ecological footprint?
| ecological roles
food webs
human impact on the environment
natural resources |
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| | Depicting Interpreting Predicting |
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