Science 9 Date: Unit # 2 Space Exploration – Class 1 Notes Handout Haiku on Heavens: Beautiful clear sky Many wonders to be found This world discovered Developing Ideas about the “Heavens” First Nations Story of the Sky: • Thought the night sky was a pattern on a great blanket overhead and holes that were stars • Believed‚ the blanket was kept up by a spinning “world pole” • Bottom of the pole was on a woman underground named Stone Ribs Tracking Cosmological Events • Summer
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Throughout most of history‚ the amount of waste generated by humans was insignificant due to low population density and low societal levels of the exploitation of natural resources. Common waste produced during premodern times was mainly ashes and human biodegradable waste‚ and these were released back into the ground locally‚ with minimum environmental impact. Tools made out of wood or metal were generally reused or passed down through the generations. However‚ some civilizations do seem to have
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Introduction Protein purification is the series of processes to isolate a single type of protein from a complex mixture. This is vital to extract and characterize the protein of interest. However‚ before doing so‚ it is important to release the protein from the subcellular organelles. This step is also known as homogenization. This step can be done with the use of blender. As the solution was homogenized‚ it may undergo saltation or acidation to remove impurities such as calcium anions. Hexane
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Air and Water Pollution Paper ENV 100 - Principles of Environmental Science Air and Water Pollution Paper Pollution is defined as “the introduction of harmful substances or products into the environment” (Dictionary.com). There are many different forms of pollution including air‚ water‚ soil‚ light‚ and noise pollution. Each of the pollutants contributes to a change in the environments that has a negative effect in one way or another. Pollution affects plants and animal life‚ our oceans
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Nanotechnology holds huge promise in a wide range of applications but there are potential risks. Discuss. “Nanotechnology is the science of creating or modifying materials at the atomic and molecular level to develop new or enhanced materials and products. Nano-materials are one-billionth of a meter in size‚ a thousand times smaller than a red blood cell.”[i] One of the common words that are being referenced these days when we discuss about the world developing into a more advanced is nanotechnology
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Space exploration is a highly debated topic on whether or not it should be funded by the government. Currently‚ the United States spends $19.3 billion on space exploration out of its $3.95 trillion budget. Many people argue that the money needs to be spent on other issues like health care and help for the impoverished. Space exploration is an important field that the US government needs to focus on and fund because these endeavors can provide a national space defense‚ push us towards the future of
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“Solar Treated Purification” Intorduction: A. Background of the study: In our world today‚ purified water is the one that most of the people drink everyday especially those who live in cities. Water purification is the process of removing undesirable chemicals‚ biological contaminants‚ suspended solids and gases from contaminated water. The goal is to produce water fit for a specific purpose. Most water is purified for human consumption (drinking water)‚ but water purification may also be designed
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Pollution: Air‚ Water‚ Visual Pollution is the contamination of the natural environment. Pollution is one of the big issues in nowadays world. Everywhere in the planet‚ even in the most remote areas a kind of pollution can be seeing. In the air‚ in the water or in the cities the pollution is present and make places inhabitable or ugly to live in. Pollution affects‚ farms plantations‚ fishing business‚ brings sickness to people and animals that lives in polluted areas. There are several kinds of
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Water is an important source in our daily life.We use it to wash clothes or clean house.Every meal‚wealways drink some water otherwise we will be thirsty.Nowadays‚water becomes more and more common in our daily life because the development of using the technology of water. No matter whether we realise it or not‚water has become a necessary factorfor our lives.Studies have shown that drinking 8 cups of water everyday can help us to keep healthy.During the process of drinking water‚water clean our
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Water‚ land and air pollution Water pollution Water pollution is usually caused by human activities. Different human sources add to the pollution of water. There are two sorts of sources‚ they mostly come from pipelines or sewers and then into the surface water. Nonpoint sources are sources that cannot be traced to a single site of discharge. Examples some sources are: factories‚ sewage treatment plants‚ underground mines‚ oil wells‚ oil tankers and agriculture‚ acid deposition from the air
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