Formation. Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar nebula—a spinning, swirling disk of material. Approximately 4.6 billion years ago, the solar system was a cloud of dust and gas known as a solar nebula. Gravity collapsed the material in on itself as it began to spin, forming the sun in the center of the nebula. With the rise of the sun, the remaining material began to clump together. Part of Hall of the Universe. The Sun and the planets formed together, 4.6 billion years ago, from a cloud of gas and dust called the solar nebula. A shock wave from a nearby supernova explosion probably initiated the collapse of the solar nebula. ... In a similar manner, moons formed orbiting the gas giant planets. Hope this helps!
Most historians agree that the space race ended on 20 July 1969 when Neil Armstrong stepped onto the Moon for the first time. As the climax of space history and exploration, the lunar landing led to a triumph for the US.
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Desertification, nutrients in the soil, access to water, tools made for agriculture, location, climate, water pollution, the production of the food product, etc.
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There are many factors that contribute in the decision making of food choices and the growth and production of food. In able to have a productive farm, some farmers choose to use many workers, some choose to use large tools, like tractors and irrigation systems. If there is not enough water getting to the farm, in some places like California, they will make a system or transport the water to the farm. Climate and weather also play a big role. If the climate does not supply the right resources to the plants, they will not be able to grow properly. Some climates are able to grow certain plants better than in other regions. The process of the food production affects how some make their food choices. For example, some people dislike how animals are treated and cared for before they are used for meat. Then, these people make the decision to not eat meat at all or from some companies that mistreat their animals. When their is water pollution near-by farms, farmers will struggle to grow their crops. When chemicals, from these polluted water sources, travel through the soil to the farms, the crops die or are harmed. In places like Africa, with dry climates, they use one plot of land for growing crops, then move to another plot the next year, because the nutrients from that plot were used all up for growing those plants. Sometimes, they even burn the weeds and shrubs after the harvest because it provides the soil with nutrients. This method is called slash and burn.
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Sustainable development in South America is also important due to the fact that we, as a nation, consume many products from the region. ... Overpopulation in South America even impacts the United States due to the increased migration of citizens looking for a better life and a way out of the poverty of their home country.
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