The Nonliving Environment Abiotic factors the nonliving parts
The Nonliving Environment • Abiotic factors- the nonliving parts of an organism’s environment. • Examples include air currents, temperature, moisture, light, and soil. • Abiotic factors affect an organism’s life. copyright cmassengale 1
The Living Environment • Biotic factors- all the living organisms that inhabit an environment. • All organisms depend on others directly or indirectly for food, shelter, reproduction, or protection. copyright cmassengale 2
Abiotic or Biotic? Biotic copyright cmassengale 3
Abiotic or Biotic? Abiotic copyright cmassengale 4
Abiotic or Biotic? Abiotic copyright cmassengale 5
Abiotic or Biotic? Biotic copyright cmassengale 6
Levels of Organization copyright cmassengale 7
What are the Simplest Levels? • Atom • Molecule • Macromolecule • Organelle • Cell • Tissue • Organ system • Organism copyright cmassengale 8
Levels of Organization • Ecologists have organized the interactions an organism takes part in into different levels according to complexity. copyright cmassengale 9
1 st Level of Organization • Organism: An individual living that is made of cells, uses energy, reproduces, responds, grows, and develops copyright cmassengale 10
2 nd Level of Organization • Population: A group of organisms, all of the same species, which interbreed and live in the same place at the same time. copyright cmassengale 11
3 rd Level of Organization • Biological Community: All the populations of different species that live in the same place at the same time. copyright cmassengale 12
4 th Level of Organization • Ecosystem: Populations of plants and animals that interact with each other in a given area with the abiotic components of that area. (terrestrial or aquatic) copyright cmassengale 13
5 th Level of Organization Biome- a large geographical area of distinctive plant and animal groups, which are adapted to that particular environment. copyright cmassengale
6 th Level of Organization • Biosphere: The portion of Earth that supports life. copyright cmassengale 15
What level of organization? Organism copyright cmassengale 16
What level of Organization? Community copyright cmassengale 17
What level of Organization? Population copyright cmassengale 18
Population Ecology
Population Growth • 1. Exponential growth a) growth with ideal conditions J- Curve http: //www. arcytech. org/java/population/facts_math. html#expgraph
• 2. Logistic Growth a) growth slowed by limiting factors S- Curve http: //www. arcytech. org/java/population/facts_math. html#sgraph
Carrying Capacity • Carrying Capacity. Largest number of individuals of a population that an environment can maintain.
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