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Transcript
Sec. 22.1 Terms Ecosystem—All the living and nonliving things that interact in a particular area Habitat—The place where an organism lives and that provides all the needs of that organism. Biotic Factors —The living parts of an ecosystem Abiotic Factors —the nonliving parts of an ecosystem Sec. 22.1 Terms • Population—all the members of one species in a particular area • Community – all the different populations that live together in an area • Ecology – the study of how living things interact with one another and their environment. HABITATS • ORGANISMS LIVE IN A SPECIFIC PLACE WITHIN AN ECOSYSTEM • AN ORGANISM OBTAINS FOOD, WATER, SHELTER AND OTHER THINGS IT NEEDS TO LIVE GROW AND REPRODUCE FROM ITS SURROUNDINGS • ORAGINSMS LIVE IN DIFFERENT HABITATS BECAUSE THEY HAVE DIFFERENT REQUIREMENTS FOR SURVIVAL. BIOTIC FACTORS • THE LIVING PARTS OF AN ECOSYSTEM ABIOTIC FACTORS • WATER—ALL LIVINGS THINGS REQUIRE WATER FOR LIFE • SUNLIGHT—NEEDED FOR PHOTOSYNTHESIS • OXYGEN-MOST LIVING THINGS REQUIRE OXYGEN • TEMPERATURE—DETERMINES THE TYPES OF ORGANISMS THAT LIVE IN AN AREA • SOIL—INFLUENCE THE TYPES OF PLANTS THAT LIVE IN AN AREA. HOME TO BILLIONS OF MICROSCOPIC ORGANISMS POPULATIONS • DO NOT STAY IN A CONTAINED AREA • THE AREA OCCUPIED BY A POPULATION CAN BE VERY SMALL (BLADE OF GRASS) TO VERY LARGE (THE ENTIRE PLANET.) COMMUNITIES • DIFFERENT POPULATIONS LIVE TOGETHER IN A COMMUNITY • TO BE A COMMUNITY, DIFFERENT POPULATIONS MUST LIVE CLOSE ENOUGH TOGETHER TO INTERACT. ECOLOGY • ECOLOGIST—SCIENTIST WHO STUDY HOW BIOTIC AND ABIOTIC FACTORS IN AN ECOSYSTEM ARE REALTED. SECT. 22.2 TERMS • LIMITING FACTOR —AN ENVIRONMENTAL FACTOR THAT PREVENTS A POPULATION FROM INCREASING • CARRYING CAPACITY —THE LARGEST POPULATION THAT AN ENVIRONMENT CAN SUPPORT LIMITING FACTOR • FOOD—IF THERE IS NOT ENOUGH FOOD FOR A POPULATION, THE POPULATION CANNOT REPRODUCE • SPACE—THERE MUST BE ENOUGH SPACE IN AN AREA FOR ORGANISMS TO LIVE AND REPRODUCE • WEATHER—TEMPERATURE AND RAINFALL CAN LIMIT A POPULATIONS GROWTH SECT. 22.3 TERMS • • • • • • • • • NICHE COMPETITION PREDATION SYMBIOSIS MUTUALISM COMMENSALISM PARASITISM PARASITE HOST