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5389961804Cell theoryThe theory that cells form the fundamental structural and functional units of all living organisms0
5389974006Populationcertain number of individuals that back up an interbreeding, reproducing group1
5389977147CommunityDifferent species living together2
5389977148BiosphereLiving portion of the world3
5389979559Gaia hypothesisWhole Earth is actually living; depends on interpretation because it is a whole system, everything works together, homeostasis; big theory in the 70s4
5390123175Ecotones- Transitional areas; an overlap between ecosystems - Some species live in this in-between area e.g. crabs that wash up on shore at beach5
5392137968Ecosystem- Combination of biotic and abiotic factors that make up that area - Precipitation and temperature determine vegetation which then determines everything else, essentially they define the ...6
5392143140BiomeA group of ecosystems that share similar climates and typical organisms7
5392167077GISIncredibly powerful computer database where you can study the powers of geography; program that can compile different satellite imagery; can see how many forests are left in the U.S.8
5392170597Range of Tolerance- Organisms are only able to survive according to certain limiting factors - If it's below or above, the plant won't survive - Where they can actually survive, but within there is optimal range and range of stress9
5392310931Rate of growth- Best grow happens at optimal temperature range - Plant can survive within whole range of tolerance, but there's an optimal temperature and zones of stress on either side10
5392312427Limiting factorThings that influence how well an organism or species survives; e.g. for plants: temperature, precipitation, pH, sunlight, etc.11
5392337623Optimal temperature rangeBest temperatures for growth12
5392365950NicheWhat they eat, habitat within ecosystem that they occupy (e.g. some insects in trees, some in soil), and role they play with other organisms, how they interact with everything in the environment13
5392372984AtmosphereA thin layer of gases surrounding Earth14
5392374576HydrosphereAll the water at and near the surface of the earth, 97% of which is in oceans15
5392374577BiosphereConsists of all life on Earth and all parts of the Earth in which life exists, including land, water, and the atmosphere16
5392374578LithosphereA rigid layer made up of the uppermost part of the mantle and the crust17
5392382728AtomBasic unit of matter18
5392382729CompoundA substance made up of atoms of two or more different elements joined by chemical bonds19
5392382730Carbon cycleThe organic circulation of carbon from the atmosphere into organisms and back again the series of processes by which carbon compounds are interconverted in the environment, chiefly involving the incorporation of carbon dioxide into living tissue by photosynthesis and its return to the atmosphere through respiration, the decay of dead organisms, and the burning of fossil fuels20
5392382731Nitrogen cycleA cycle of matter in which nitrogen atoms move from nitrogen gas in the atmosphere to inorganic forms in the soil, to organic forms in living things, and then back to inorganic forms in the soil and nitrogen gas in the atmosphere21
5392568146Law of Conservation of Matter (First Law of Thermodynamics)- Plants grow from matter from CO2 and H2O! -- don't get matter from soil, get micronutrients (like vitamins), but not soil; e.g. do not need soil to grow tomatoes - Matter from photosynthesis --> animals eat that --> something else eats that --> eventually all those molecules add up to make a big one --> thing dies --> matter goes back into the ground!!22
5392568147Law of Conservation of Energy (Second Law of Thermodynamics)- Energy cannot be created nor destroyed, but can be transformed; e.g. photosynthesis - Lose 10% of energy every trophic level23
5392570179Potential energyEnergy that is stored and held in readiness; e.g. firewood, batteries, water24
5392584828Entropy- The tendency towards disorder - When energy is in form of glucose, it's very organized; heat is very disorganized energy - Over time, energy becomes less organized and less useful --> diffusion and osmosis: over time, matter spreads out - The only way to keep everything organized is to input energy - Body constantly needs energy to keep us going, it's not just energy for motion/to think- it keeps cells from breaking down25
53926428316CO2 + 6H2O with h.v.Goes into photosynthesis26
5392645334C6H12O6 + 6O2Comes out of photosynthesis27
5392657161PhosphatesATP Nucleotides (DNA/RNA) Phospholipid membrane (cell membrane) Hugely important in biological systems!28
5392661705Phosphorus cycle- The movement of phosphorus atoms from rocks through the biosphere and hydrosphere and back to rocks - Plants take in phosphates for growth! --> consumers eat plants --> how we get phosphates in our bodies29
5392668797(Human impact on the) phosphorus cycleFertilizers, detergents: - Have NPK (nitrogen, phosphorus, potassium) ratios --> when we use fertilizers, it disrupts both of those cycles When it rains it runs off into oceans --> dissolved in waterways --> algae blooms (eutrophication) --> die --> decomposer bacteria break down excess algae --> uses up oxygen in water30
5392686273Eutrophication (phosphorus cycle)Nitrogen and phosphorus get added to water (through fertilizers/detergent) algae blooms --> dies --> decomposers consume dead algae --> uses up oxygen in water --> dead zone; no organisms can live there - e.g. Gulf of Mexico, 200 miles with no fish because it's at the end of the Mississippi31
5392695785Positive growthBirths and immigrations32
5392695786Negative growthDeaths and emigration33
5392698755J-curve- Exponential growth; slope increasing dramatically; dramatic increase in size of population in short period of time - Followed by insects-- there are a lot, but then in the winter they crash34
5392701049S-curve- Logistic growth; population size and growth rate increase, but level off; steadier growth than J-curve - Mammals in general35
5392703132Carrying capacity- "K" - Size of population that the environment can support; how much the environment can support of that species; about the environment, and the species reacting to that environment - E.g. environment can only support so many deer- they need space, water, habitat, etc.36
5392705356R species- Grow without competition for resources and no environmental factors that affect growth - Opportunistic, able to move in and grow quickly in open environments - Lack of parental care, many die young - Usually semelparous and have short life span - Poor ecological competitions and can be easily pushed out - Population never gets to the level where they need to compete for resources - Drastic change --> this species will suvrive - Rapidly changing environment, species adapt quicker --> they survive because they reproduce much faster and in mass quantities37
5392705357K species- Strong ecological competitors; out-compete opportunistic organisms - Don't have quick establishment, but stay in an area for a long time - Long generation time; iteroparous with low fecundity - Lots of time invested into caring for young - Population gets to the point where there is competition for limited resources and space - Much slower to change, and if changes are too rapid they'll go extinct38
5392709622Constant growthNever happens, not realistic39
5392775769Biotic potential- The maximum rate at which a population could increase under ideal conditions - Reproductive rate, what's the next generation? ability to migrate, ability to survive, how can you increase the size of the population?40
5392782559Environmental resistanceHow to keep a population in check; limiting the growth of the population - Lack of food - Lack of water - Lack of habitat - Weather conditions - Predators - Disease - Parasites - Competitors41
5392787867Survivorship curve- A generalized diagram showing the number of surviving members over time from a measured set of births - Some species lay hundreds of eggs because not very many survive42
5392806295Bottom upIt's hurting biotic potential; your growth cannot go up43
5392835347Keystone speciesA species that influences the survival of many other species in an ecosystem; e.g. otters, sharks, elephants, bees44
5392919176Intracompetitioncompetition between members of the same species45
5392921140IntercompetitionCompetition between different species46
5392922863TerritorialityA behavior in which an animal defends a bounded physical space against encroachment by other individuals, usually of its own species; intracompetition47
5392928746Resource partitioning- Different species adapt and evolve to use different portion of resource - Classic example: warblers live in different portions of trees because there are different food sources in different parts of the trees --> partition it and have different diets depending on where they live - Reduces competition Between 2 different species- species evolve so their niche doesn't completely overlap with another species; lessens amount of overlap - E.g. why different fish live at different depths in the ocean/ plants have roots that grow to different depths48
5392941605Evolution- Mutations --> new genes: sometimes harmful, that one individual may not survive; sometimes they give an advantage --> if they have the survival advantage, they're more likely to reproduce and pass that modification on If it's a big advantage, eventually the whole population will have that advantage - Can see, can study long-term; e.g. Darwin's finches, fruit flies; HIV evolves so quickly that scientists can't make a vaccine for it, antibiotic resistance bacteria - Sexual production has advantage in evolution because you're mixing49
5392943603Selective pressuresForces in the environment that influence reproductive success in individuals - Temperature, light, water, pH, elements --> put selective pressure on species to evolve50
5393050336Ballast waterTankers and cargo ships carry it to balance and maintain buoyancy when trading --> brings in different organisms; e.g. zebra mussels, mice/rats51
5393069792Speciesgroup of individuals that share certain characteristics distinct from other groups52
5393074337Biotic communitiesthe living things that exist in a population53
5393079794environmental factorsnon-living conditions (unusable) and resources (consumable)54
5393088597Carbon, Hydrogen, Nitrogen, Phosphorus, Sulfurorganic compounds55
5393095580first law of thermodynamics (law of conservation of energy)energy cannot be created nor destroyed, only converted56
5393099577Nitrogen Fixationthe chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle (bacteria)57
5393363845Dentrificationmicrobes take nitrate (highly oxidized) and use it as oxygen microbially facilitated process of nitrate reduction by a heterotrophic, anaerobic bacteria; produces molecular nitrogen through series of intermediate gaseous nitrogen oxide products58
5393364395synergistic effectswhen the combined effect of two or more things is greater than if you just added to two effects; when an injury caused by exposure to two environmental factors together is greater than the sum of exposure to each factor individually59
5393379681Nitrogen cascadeEffect of Nr, reactive nitrogen, on the atmosphere60

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