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Filter By Topic: 1. Energy is a physical quantity that follows precise natural laws. 2. Physical processes on Earth are the result of energy flow through the Earth... 3. Biological processes depend on energy flow through the Earth system. 5. Energy decisions are influenced by economic, political, environmental, and... 6. The amount of energy used by human society depends on many factors. 7. The quality of life of individuals and societies is affected by energy... 4. Various sources of energy are used to power human activities. 8. Wood based bio-fuels are one form of energy that is renewable
Filter By Sub-Topic: 1.1 Energy is a quantity that is transferred from system to system. 1.2 The energy of a system or object that results in its temperature is called... 1.3 Energy is neither created nor destroyed. 1.4 Energy available to do useful work decreases as it is transferred from... 1.5 Energy comes in different forms and can be divided into categories. 1.6 Chemical and nuclear reactions involve transfer and transformation of... 1.7 Many different units are used to quantify energy. 1.8 Power is a measure of energy transfer rate. 2.1 Earth constantly changes as energy flows through the system. 2.2 Sunlight, gravitational potential, decay of radioactive isotopes, and... 2.3 Earth’s weather and climate are mostly driven by energy from the Sun. 2.4 Water plays a major role in the storage and transfer of energy in the Earth... 2.5 Movement of matter between reservoirs is driven by Earth’s sources of... 2.6 Greenhouse gases affect energy flow through the Earth system. 2.7 The effects of changes in Earth’s energy system are often not immediately... 3.1 The Sun is the major source of energy for organisms and the ecosystems of... 3.2 Food is a biofuel used by organisms to acquire energy for internal living... 3.3 Energy available to do useful work decreases as it is transferred from... 3.4 Energy flows through food webs in one direction, from producers to... 3.5 Ecosystems are affected by changes in the availability of energy and... 3.6 Humans are part of Earth’s ecosystems and influence energy flow through... 4.1 Humans transfer and transform energy from the environment into forms useful... 4.2 Humans use of energy is subject to limits and constraints. 4.3 Fossil and biofuels are organic matter that contain energy captured from... 4.4 Humans transport energy from place to place. 4.5 Humans generate electricity in multiple ways. 4.6 Humans intentionally store energy for later use in a number of different... 4.7 Different sources of energy and different ways energy is transformed,... 5.1 Decisions concerning the use of energy resources are made at many levels. 5.2 Energy infrastructure has inertia. 5.3 Energy decisions can be made using a systems-based approach. 5.4 Energy decisions are influenced by economic factors. 5.5 Energy decisions are influenced by political factors. 5.6 Energy decisions are influenced by environmental factors. 5.7 Energy decisions are influenced by social factors. 6.1 Conservation of energy has two very different meanings. 6.2 One way to manage energy resources is through conservation. 6.3 Human demand for energy is increasing. 6.4 Earth has limited energy resources. 6.5 Social and technological innovation affects the amount of energy used by... 6.6 Behavior and design affect the amount of energy used by human society. 6.7 Products and services carry with them embedded energy. 6.8 Amount of energy used can be calculated and monitored. 7.1 Economic security is impacted by energy choices. 7.2 National security is impacted by energy choices. 7.3 Environmental quality is impacted by energy choices. 7.4 Increasing demand for and limited supplies of fossil fuels affects quality... 7.5 Access to energy resources affects quality of life. 7.6 Some populations are more vulnerable to impacts of energy choices than... 8.1 Sources of cellulosic residuals used are found in forest operations and in... 8.2 Transportation and logistic considerations shape cost and feasibility within... 8.3 Pretreatment processess makes sugars more available. 8.4 The conversion processess includes adding specific enzymes to make simple... 8.5 Fermentation processess use specialized yeasts to create isobutanol. 8.6 Liquid fuel can be produced from wood feedstocks. 8.7 Co-products in biofuel production use lignin in many ways. 8.8 Life cycle analysis take account of ecological factors that are in steps...
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