replacement hypothesis – how it is supported‚ what it is Chapter 50 – An Introduction to Ecology and the Biosphere Section A – The Scope of Ecology Ecology – definition Abiotics vs biotic factors Ecological time vs evolutionary time Organismal biology Organism – population – community – ecosystem Community ecology Ecosystem ecology Landscape ecology Rachel Carson – DDT – wrote book “Silent Spring” – know her story Section B1 – Factors Affecting the Distribution of Organisms Global patterns
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population and culture integration. Extended response – Natural resources – one or a combination of the four points Geography Preliminary Notes The Biophysical Environment * The Biophysical Environment is the interaction of all abiotic and biotic elements found on the planet. * Expressed another way the BPE is made up of all the features of the physical and the built environment and how these features interrelate. * The BPE is then the interactions‚ which occur between the Atmosphere
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The Ecosystem of Big Bend National Park Big Bend National Park preserves a portion of the Chihuahuan Desert‚ an ecosystem that goes largely unprotected in Texas and Mexico. The park encompasses shrublands‚ grasslands‚ high-elevation woodlands‚ and riparian areas. Big Bend National Park Major Biotic Components • Large mammals such as Black Bears‚ Mountain Lions‚ Coyotes‚ Mule Deer and Whitetail deer inhabit Big Bend National Park • Smaller mammals also inhabit the park‚ such as jackrabbits
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CHAPTER 4: THE ORGANIZATION OF LIFE VOCABULARY LIST DEFINE THE FOLLOWING TERMS FROM THE GLOSSARY: ECOSYSTEM: a community of organisms and their abiotic environment. BIOTIC FACTOR: an environmental factor that is associated with or results from the activities of living organisms (100) ABIOTIC FACTOR: describes the non-living part of the environment‚ including water‚ rocks‚ light‚ and temperature. ORGANISM: a living; anything that can carry out life processes
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Ecosystem which consists of all the organisms living in a particular area‚ as well as all the nonliving‚ physical components of the environment with which the organisms interact‚ such as air‚ soil‚ water‚ and sunlight. It is all the organisms in a given area‚ along with the nonliving (abiotic) factors with which they interact; a biological community and its physical environment. The entire array of organisms inhabiting a particular ecosystem is called a community.] In a typical ecosystem‚ plants
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role in sustaining life on earth. (Figure 1) For many years thousands of groups of indigenous people behaved in many ways that often transformed ecosystems and led to the extinction of many species. Recently‚ contemporary industrial societies have exploited the biophysical environment with little regard for its ecological limits. Atmosphere is only the thing that keeps you from being burned to death
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Chapter 3 Ecosystems: What Are They and How Do They Work? Section 3-1: What Keeps Us and Other Organisms Alive? Earth’s life support system has four major components: The atmosphere (air) The hydrosphere (water) The geosphere (rock‚ soil‚ and sediment) The biosphere (living things) The Atmosphere The atmosphere can be divided into two layers: The troposphere extends about 17 km above sea level at the tropics and about 7 km above the north and south poles. It contains the air we breathe: 78% Nitrogen
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The overuse of electricity affects the ecosystem in several ways. The overuse of electricity can lead to an increased carbon footprint‚ increased climate change‚ reduction in supply‚ and high energy costs. The abiotic factors that contribute are electricity‚ smoke‚ temperature‚ climate‚ and mining. The biotic factor that affects it is people. Leaving your laptop plugged in all the time will use up 300 kilowatts an hour each year. A natural consequence of overusing energy is increased costs for you
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the number of individuals doubles in a specific time interval and keeps doubling in increasingly shorter periods of time. The J-shaped curve is also called as Exponential curve. Biotic potential – the maximum rate at which a population could increase under ideal conditions – an environment with unlimited resources. The biotic potential is rarely achieved by population in natural
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species use of the abiotic and biotic resources in its environment 6. Symbiosis: an ecological relationship between organisms of two different species that live together in direct contact 7. Commensalism: A symbiotic relationship in which the symboint benefits but the host is neither helped nor harmed. 8. Mutualism: a symbiotic relationship in which
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