Characteristics of Living Things In order to be considered a living organism living something must: Be made of Cells Grow and Develop Reproduce Maintain Homeostasis Carry Out Metabolic Processes Contain Genetic Material

Hierarchy of Life Living things are organized into different levels of increasing complexity. The 3 Levels Include: Cellular Organismal Populational

Cellular Organization Atoms Molecules Macromolecules Cells Smallest Least Complex Largest Most Complex

Cell Tissue Organ Organ System Organism Smallest Least Complex Largest Most Complex

Organism Population Community Ecosystem Biosphere Populational Organism Population Community Ecosystem Biosphere Least Complex Smallest Largest Most Complex

Organism: One Individual Live Thing Population: Group of organism of the same species in the same area

Community: Groups of populations in the same area.

Ecology contains both Biotic and Abiotic Factors Ecology contains both Biotic and Abiotic Factors! What are Biotic and Abiotic factors? Biotic: Biological (living) influences upon organisms in an ecosystem. Ex.: Other organisms (plants, fungi, bacteria,..) Abiotic: Physical (nonliving) influences upon organisms in an ecosystem. Ex.: Climate, Soil, Water

Ecosystem: Includes all the living (biotic) and nonliving (abiotic) factors in an area. Gazelle Zebra Elephant Tree Abiotic: Water Air Rock Soil

BIOSPHERE: A part of the earth in which life exists to include land, water, air/atmosphere.

Habitat- The area in which an organism lives

Niche: The organism’s place or ecological role it takes in the ecosystem. No two species can share the exact same niche in a habitat!

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