ecology 9

• ecology the study of the relation of organisms to their environment and each other
• Movement moving away or towards things
• reproduction produce offspring to continue species
• sensitivity responding to the environment
• growth increasing in size
• respiration using oxygen for the release of energy from glucose or other chemicals in our cells
• excretion remove of waste from chemical reactions in the body
• nutrition taking in or making energy
• biotic components living organisms
• abiotic components non-living parts of the environment
• biome large regions that have similar biotic and abiotic components
• atmosphere gaseous, 10km above surface and higher
• geosphere/lithosphere solid, rocky part
• hydrosphere all of the water within geosphere
• biosphere regions occupied by living organisms
• 4 survival: 1) food 2) water 3) shelter 4) mates 2 reproduce
• food chain model that shows the flow of energy btwn stuff
• producer/autotroph produce their own food thru photosynthesis
• consumer/heterotroph get energy frm eat other organisms / cant make their own food
• herbivore - eat producers/plants
• carnivores eat other consumers
• omnivores eat other consumers and producers
• decomposers break down wastes n dead organisms, change them in2 nutrients 2 other organisms
• decomposition breaking down waste and dead organisms
• detritivores consumers that feed at every trophic lvl, get energy by eat dead organic matter
• scavengers organisms that find and eat dead organisms
• ecosystems where biotic components interaction with abiotic components
• habitat place where an organism lives
• abiotic components for orgnsm to live: 1) oxygen 2) water 3) nutrients 4) light 5) soil
• photosynthesis - require light
• cellular respiration = reverse process of photosynthesis
• biotic interactions- made up of species, population, community
• species a group of closely rel8d orgsnsms that can reproduce w 1 anthr
• population- all members of a particular spe3cies within an ecosystems
• community all the populations of the diff species that interact in a specific area
• BECPI: BIOSPHERE, ECOSYSTEM, COMMUNITY, POPULATION, INDIVI
• ecological hierarchy: OPCE - organism, population, community, ecosystem
• Symbiotic relationships close associations formed between pairs of species
• symbiosis interaction btwn members of 3 diff species
• commensalism one species benefit, other isnt helped or harmed