In this exercise the student will define and expand the discussion of the â€œKey Questionsâ€ that are listed for each chapter in the Study Guide. You are required to define, discuss these key questions, and relate them to other important concepts and ideas in the study of environmental science and sustainable development in your own words. You must also add relevant personal opinions and make connections to sustainable practice in the Mojave Desert whenever possible and describe how/what/when technology is being used appropriately. One long or two short paragraphs (four to six sentences) with minimum 100 words 1-1 What are some of the scientific principles of sustainability? Concept 1-1A Nature has sustained itself for billions of years by using solar energy, biodiversity, population control, and nutrient cycling â€“lessons from nature that we can apply to our lifestyles and economies 1-2 How are our ecological footprints affecting the earth? Concept 1-2 As our ecological footprints grow, we are depleting and degrading more of the earthâ€™s natural capital 1-1 What is an environmentally sustainable society? Concept 1-1A Our lives and economies depend on energy from the sun (solar capital) and on natural resources and natural services (natural capital) provided by the earth. Concept 1-1B Living sustainably means living off the earthâ€™s natural income without depleting or degrading the natural capital that supplies it. 1-2 How can environmentally sustainable societies grow economically? Concept 1-2 Societies can become more environmentally sustainable through economic development dedicated to improving the quality of life for everyone without degrading the earthâ€™s life-support systems. 1-2 How are our ecological footprints affecting the earth? Concept 1-2 As our ecological footprints grow, we are depleting and degrading more of the earthâ€™s natural capital. 1-3 Why do we have environmental problems? Concept 1-4 Major causes of environmental problems are population growth, wasteful and unsustainable resource use, poverty, exclusion of environmental costs of resource use from the market prices of goods and services, and attempts to manage nature with insufficient knowledge. 1-4 What are some of the scientific principles of sustainability? Concept 1-1A Nature has sustained itself for billions of years by using solar energy, biodiversity, population control, and nutrient cycling â€“lessons from nature that we can apply to our lifestyles and economies. 2-1 What is science? Concept 2-1 Scientists collect data and develop theories, models, and laws about how nature works 2-2 What is the matter and how can matter change? Concept 2-2A Matter consists of elements and compounds, which are in turn made up of atoms, ions, or molecules. Concept 2-2B When matter undergoes a physical or chemical change, no atoms are created or destroyed (the law of conservation of matter). 2-3 What is energy and how can it be changed? Concept 2-3A When energy is converted from on form to another in a physical or chemical change, no energy is created or destroyed (first law of thermodynamics). Concept 2-3B Whenever energy is changed from one form to another, we end up with lower quality or less usable energy than we started with (second law of thermodynamics). 2-4 What keeps us and other organisms alive? Concept 2-4 Life is sustained by the flow of energy from the sun through the biosphere, the cycling of nutrients within the biosphere, and gravity. 2-5 What are the major components of an ecosystem? Concept 2-5 Ecosystems contain nonliving (abiotic) and living (biotic) components, including producers, which produce the nutrients they need; consumers, which get their nutrients by consuming other organisms; and detritivores, which recycle nutrients back to producers. 2-6 What happens to e
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