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Introduction to Ecology Science 10 Mrs. Purba Paradigm Pronounced, “PAIR-A-DIME” The way we use concepts to build our understanding. We usually use ideas that are “common” to us, to explain extraordinary things. Paradigm Shift Occurs when old paradigms are replaced by new paradigms. When “old” ways of thinking are replaced by “new” ways of thinking. Examples of Paradigm Shifts: Ecological Paradigm Shifts We believed that as humans, we were totally unrelated to other animal life on Earth We believed that we were placed on this Earth to “rule” and use the “boundless” resources… SUPERIORITY COMPLEX Two Types of Resources 1. Renewable Resources 2. Non-renewable Resources Renewable Resources Resources that can be replaced as fast or faster than they are being used. Example: Energy from the sun (solar power) Non-renewable Resources Resources that cannot be replaced or are being used much faster than they are forming. Example: Coal, oil, natural gas (fossil fuel) Sustainability The ability to meet the needs of the present generation without compromising the ability of future generations to meet their needs. Closed System An environment where substances do not enter or leave. Biosphere The “life zone” of Earth, including the lower part of the atmosphere, hydrosphere, and upper part of the Earth’s crust (lithosphere) Biodiversity Variety of living organisms that inhabit Earth Habitat Place where an organism “lives”. We can have terrestrial (land) habitats and aquatic (water) habitats. Ecology The scientific study of the interaction of organism and their environment. Ecosystem A community of organisms and the physical environment where they live.