Presentation on theme: "Chapter 18 Section 1 Interactions of Living Things"— Presentation transcript:
1 Chapter 18 Section 1 Interactions of Living Things PagesSection 1
2 Bell RingerDescribe Abiotic and Biotic factors in your journal.
3 The Environment Ecology Study of the interactions among organisms and their environment.EcologistsScientists who study environmental relationshipsOrganize the environmental factors that influence organisms into 2 groupsABIOTICBIOTIC
4 Comparing Abiotic and Biotic Factors Non-living parts of the environmentExamples:WaterLight & TemperatureAirSoil
5 Comparing Abiotic and Biotic Factors Living or once-living organisms in the environmentExamples:Levels or organizationPopulationCommunitiesEcosystemsBiomesThe Biosphere
9 Abiotic Factors Water All organisms need water to survive Organisms are made of 50%-95% waterRespiration, photosynthesis, digestion, and other important life process can only occur with presence of water95% of Earth’s surface water is found in oceans
10 Examples of Water Dale Hollow Lake Bayou-Gueydan, LA Cumberland River & Lake CumberlandPacific Ocean-Kauai, HawaiiDale Hollow LakeBayou-Gueydan, LA
11 Abiotic Factors2. LightAvailability of sun light is a major factor in determining where green plants and other photosynthetic organisms liveEnergy from Sun is changed into chemical energyAlgae-lives near water surfaceDense forest have very little photosynthetic plants, why?
12 Plant Examples The Garden of Eden-Kauai North Shore-Kauai Kipu Ranch-Kauai-conifers
13 Abiotic Factors Temperature Regional temperature also determines which plants and animals can live thereSome areas of the world have fairly consistent temperature year roundOther areas have season during which temperatures varyArctic, Desert, Mid-Atlantic, Tropical, Arid, and Mild
15 Abiotic FactorsAirComposed of a mixture of gases including Nitrogen, Oxygen, and Carbon Dioxide.Plants & Animals depend on the gases in air for respirations (breathe)All species are affected by weatherWeather- 8km to 16 km (from surface)Ozone Layer-20km to 50km (from surface)Few organisms live at extreme air pressures
16 Abiotic Factors Soil Varies greatly from one environment to another Soil Type-determined by amount of Sand, Silt, and Clay it containsVarious soils contains different amounts of nutrients, minerals, and moistureSoil affects every organism in an environment!
17 Soil Top Soil-rich in nutrients and moisture (plant crops) Red Clay-sub soil-very acidic(use as filler dirt)Bed Rock-mostly limestone/sandstone(paving stone)
18 Biotic FactorsAbiotic Factors do not provide everything an organism needs for survivalOrganisms depend on other organisms for:FoodShelterProtectionReproduction
20 Levels of Organization Organism: one individual from a populationMallard Drake “GreenHead”
21 Levels of Organization Population: all of the individual of one species that live in the same area at the same time.
22 Levels of Organization Community: the populations of different species that interact in some way
23 Levels of Organization Ecosystem: all of the communities in an area and the abiotic factors they interact with
24 Levels of Organization Biome: large region with plants and animals well adapted to the soil and climate of the region
25 Levels of Organization 6. Biosphere: The level of biological organization that is made up of all the ecosystems on Earth
26 Biosphere Where Earth’s organisms live Can be found 11,000 m deep in the ocean9,000 m high on the mountains4.5 km high in atmosphereIncludes top part of Earth’s crust, all the waters that covers the Earth’s surface, the surrounding atmosphere, and all biomes!Extremophiles