A Local Ecosystem Biotic and Abiotic * Biotic Factors – living organisms (trees‚ birds‚ predators etc…) * Abiotic Factors – non living variables (temperature‚ oxygen levels etc…) Abiotic Characteristics of Environments Characteristics | Aquatic | Terrestrial | Viscosity (measure of a medium’s resistance to an object moving through it) | HIGH VISCOSITYDifficult for organisms to move through | LOW VISCOSITYEasy for organisms to move through | Buoyancy (amount of support experienced
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PATTERNS IN NATURE QUESTIONS 1) State the cell theory 2) Outline the contributions of Robert Hooke and Robert Brown plus several others 3) Discuss how these developments helped to advance the cell theory Robert Brown’s microscope Robert Hooke’s microscope Transmission electron microscope Modern light microscope Scanning electron microscope 4) Describe evidence to support the cell theory 5) Discuss the significance of technological advances to developments
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Lecture 5 Lizan A. Majeed Reading Paragraph Purpose Each paragraph in a text has a clear purpose. For example: The first paragraph introduces the topic‚ states the purpose of the text‚ or describes a problem or situation. The body paragraphs develop arguments‚ try to persuade‚ suggest solutions‚ or describe developments. The final paragraph concludes‚ evaluates‚ or discusses consequences. Identifying the purpose of each paragraph helps you understand the text and decide where
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General Principles of Aquatic Ecology KAREN L. LANCOUR National Rules Committee Chairman – Life Science Part I: General Principles of Aquatic Ecology Aquatic Ecosystems Freshwater Lotic ecosystems – flowing water o Streams o Rivers Lentic ecosystems – still water o Ponds o Lakes o Wetlands Estuary ecosystems Marine ecosystems o Coral Reef Ecology Review of Ecology Principles: Ecology = the systematic study of how organisms interact with one another and with their environment
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a living organism takes energy from its surroundings and uses it to sustain itself‚ develop and grow. b. Photosynthesis-the process by which an organism uses the energy from the sun to produce its own food c. Autotrophs- organisms that are able to produce their own food d. Heterotrophs- organisms that cannot make their own food and must obtain it from other organisms e. respiration -- the process by which food is converted into usable energy for life functions f. homeostasis -- the tendency
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food chains and food webs. Pollution (incineration‚ factories‚ fuel combustion)‚ Overhunting/fishing‚ Deforestation etc. 7. Label the ecological pyramid below with the following words: producers‚ tertiary consumer‚ secondary consumer‚ autotroph‚ heterotroph‚ primary consumer‚ decomposers‚ hawk‚ grass‚ chicken‚ grasshopper. Also label and explain what happens to energy‚ biomass and number of organism. 8. Discuss what trophic level humans can occupy on an ecological pyramid‚ and explain what
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University of Phoenix Material Name:Shaniece Daniels Appendix A – Cell Division in Bacteria After reading Ch. 6 in Microbiology: Principles and Explorations‚ fill in the following matrix. List the four phases of bacterial growth and briefly describe what happens in each phase. Lag phase: Is the period when the bacteria are adjusting to the environment. Log phase: Is when the population grows in a logarithmic fashion. Stationary phase: a substance that shows different
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Natural Resources and Energy in the Rainforests The beauty‚ majesty‚ and timelessness of a primary rainforest is indescribable. It is impossible to capture on film‚ to describe in words‚ or to explain to those who have never had the awe-inspiring experience of standing in the heart of a primary rainforest. Rainforests have evolved over millions of years to turn into the incredibly complex environments they are today. Rainforests represent a store of living and breathing renewable natural resources
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production = respiration + heat losses + net production)…in aquatic systems‚ productivity is often measured in volume instead of area” ("Biological Productivity‚" 2012‚ p. 1). Ecologists distinguish between primary and secondary productivity by autotrophs and heterotrophs. To list several factors that influence productivity in various ocean environments I believe it is important to first understand that “although oceans cover approximately two-thirds of the Earth’s surface area‚ it only accounts for about
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Lecture 19: autotrophs‚ heterotrophs‚ primary producer‚ consumer‚ predator‚ plants‚ animals‚ photosynthesis‚ organic material‚ inorganic material‚ carbon‚ carbohydrates‚ chlorophyll‚ nutrients‚ limiting Q.The forward and reverse reactions of the following equation describes what processes:
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