Presentation on theme: "Principles of Ecology Objectives: 1. Explain the difference between abiotic and biotic factors. 2. Describe the levels of biological organization 3."— Presentation transcript:
1 Principles of EcologyObjectives: 1. Explain the difference between abiotic and biotic factors. 2. Describe the levels of biological organization 3. Differentiate between an organisms habitat and its niche.
2 VocabularyEcology Biosphere Biotic factor Abiotic factor Population Biological Community EcosystemBiomeHabitatNichePredationSymbiosisMutualismCommensalismParasitism
3 EcologyEcology: the study of relationships between living organism, and their interaction with their environments.Biosphere: The portion of the earth that supports life.
4 Biotic and Abiotic Factors Biotic Factors: The living factors in an organism’s environment.Abiotic Factors: The non-living factors in an organism’s environment.
14 Community Interactions Competition: occurs when more than one organism uses a resource at the same time.Competition for food, water, space, light, and mates.Predation: The act of one organism consuming another organism for food.
15 Community Relationships Continued Symbiotic relationship: A close relationship that exists when two or more species live together.
16 Three types of Symbiotic Relationships Mutualism: when the two or more organisms both benefit from the relationship.Commensalism: a relationship when one organism benefits and the other organisms is neither helped nor harmed.Parasitism: a relationship when one organism benefits at the expense of another organism.