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Download PowerPoint_Ecosystem Organization and Limiting Factors
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Inquiry Activity Put an L next to all of the things you think are living and an N next to the things you think are nonliving: ___ Plant ___ Sunlight ___ Wind ___ Frog ___ Mold ___ Oxygen ___ Human ___ Flower ___Yeast ___ Bird ___ Temperature ___ Humidity ___ Water ___ Minerals ___ Rock ___ Rain ___ Bacteria ___ Fire What is Ecology? Ecology- studies interactions between organisms and their environments. It is a science of relationships. What do you mean by environment? The environment is made up of two factors: Biotic factors- all living organisms inhabiting the Earth Abiotic factors- nonliving parts of the environment (i.e. temperature, soil, light, moisture, air currents) Levels of Organization in Ecology A range of all surroundings in an environment. Listed from smallest to largest. Biosphere Ecosystem Community Population Organism Level or Organization Notes You will be moving around to the descriptions of each level of the walls around the classroom You will have 8 minutes to get all 5 levels of organization and an example for each one (SO MOVE QUICKLY)! Once you are done head back to your assigned seat Organism- any unicellular or multicellular living thing. •The smallest level of organization •Example: 1 Fish or 1 Bear Population-a group of one species of organisms living in the same place and breeding. Example: Group of Bears or a School of Fish. Community- several different populations that live in a common environment. Example: Bears AND Fish Living in the SAME PLACE Ecosystem- Made up of communities and abiotic factors. Biosphere- ALL life supporting portions of Earth composed of air, land, fresh water, and salt water. •The largest level of organization What is a Limiting Factor? Limits the SIZE of a population and prevents it from growing FAST Examples include: stress (overcrowding), starvation, disease, parasites and predation, poor reproductive success, and damage to the habitat. Limiting Factors can be both BIOTIC and ABIOTIC Carrying Capacity Carrying capacity is the maximum population that the environment can support Limiting factors effect carrying capacity The amount of food, habitat (living space), water etc.