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DSST Environment-Humanities DANTES II

Know the tundra rangelands tropical rainforests and

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Know the tundra, rangelands, tropical rainforests and their dynamics.
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Tundra - is a biome where the tree growth is hindered by low temperatures and short growing seasons. (artic – Boreal Forest) Rangeland - Rangelands include natural grasslands, savannas, shrublands, many deserts, tundra, alpine communities, coastal marshes, and wet meadows. Rangeland is generally arid, semi-arid, sub-humid or otherwise unsuitable for cultivation. Ranches are likely to comprise mainly rangeland. Tropical Rainforest - is a biome found within (roughly) 10 degrees north or south of the equator. Rain forests belong to the tropical wet climate group. The temperature in a rain forest rarely gets higher than 93 °F (34 °C) or drops below 68 °F (20 °C); average humidity is between 77 and 88%; rainfall is often more than 100 inches a year. There is usually a brief season of less rain. Renewable vs Non-renewable A renewable resource is something that is being continually replaced faster than we use it up. A non-renewable resource is something that is not being replaced as we consume it. The idea of sustainability. Sustainable development is development that meets the needs of the present without compromising the needs of future generations to meet their own needs". Water and what happens when a pond is left alone. It will fill with dirt and debris until it becomes land. What constitutes energy in the world of our environment? "Any unit that includes all of the organisms (ie: the "community") in a given area interacting with the physical environment so that a flow of energy leads to clearly defined trophic structure, biotic diversity, and material cycles (i.e.: exchange of materials between living and nonliving parts) within the system is an ecosystem.” Photosynthesis (the hows and impacts) Photosynthesis is a process that converts carbon dioxide into organic compounds, especially sugars, using the energy from sunlight. Photosynthesis occurs in plants, algae, and many species of bacteria, but not in archaea. In plants, algae, and cyanobacteria, photosynthesis uses carbon dioxide and water, releasing oxygen as a waste product. Photosynthesis is vital for life on Earth. As well as maintaining the normal level of oxygen in the atmosphere, nearly all life either depends on it directly as a source of energy, or indirectly as the ultimate source of the energy in their food (the exceptions are chemoautotrophs that live in rocks or around deep sea hydrothermal
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vents). The amount of energy trapped by photosynthesis is immense, approximately 100 terawatts which is about six times larger than the power consumption of human civilization. As well as energy, photosynthesis is also the source of the carbon in all the organic compounds within organisms' bodies. In all, photosynthetic organisms convert around 100,000,000,000 tons of carbon into biomass per year. Algae and its impact on development.
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Know the tundra rangelands tropical rainforests and their...

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