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Intro to Biology

Intro to Biology. Biomes and Ecosystems. Ecology. The scientific study of the relationships of living organisms and their natural environment. Abiotic. Non-living components (the non-living parts of an environment Examples: sunlight, soil, moisture and temperature. Abiotic Components.

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Intro to Biology

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  1. Intro to Biology Biomes and Ecosystems

  2. Ecology • The scientific study of the relationships of living organisms and their natural environment

  3. Abiotic • Non-living components (the non-living parts of an environment • Examples: sunlight, soil, moisture and temperature

  4. Abiotic Components

  5. Biotic • Living components (living organisms in an environment) • Examples: plants, animals, fungi, and bacteria

  6. Biotic Factors

  7. Biosphere • The biosphere is the thin layer of air, land and water on or near Earth’s surface in which all living things on Earth exist

  8. Biome • Large regions that have similar biotic components (such as similar plants and animals) and similar abiotic components (such as similar temperature and amount of rainfall)

  9. Ecosystems • Part of a biome whose biotic components (such as similar plants and animals) and abiotic components are similar

  10. What’s the difference between a Biome and an Ecosystem? • A biome is made up of many similar ecosystems • An ecosystem is often much smaller than a biome • Ecosystems refer to the interactions between living things and the nonliving things in a place • Biomes refer to the areas with similar features

  11. Habitat • The place where an organism lives

  12. What is the difference between an Ecosystem and a Habitat? • An ecosystem refers to the living and nonliving factors that characterize an area • A habitat refers to where an organism lives • Habitats are communities within an ecosystem

  13. Species vs. Population vs. Community

  14. Species vs. Populations vs. Community • Species = a group of closely related organisms that can reproduce with one another • Population= all the members of a particular species within an ecosystem • Community= all the populations of the different species that interact in a specific area or ecosystem

  15. Ecological Hierarchy • Ecological hierarchy is the order of biotic interactions and relationships in an ecosystem: • Organ system  • Organisms (species)  • Population  • Community  • Ecosystem (along with the nonliving organisms)  • Biome  • Biosphere Organisms  Population  Community Ecosystem  Biome  Biosphere

  16. Bringing it all together • 3 biotic factors • 3 abiotic factors

  17. Bringing it all together • 3 biotic factors • 3 abiotic factors

  18. What are Niches? • Organisms have special roles in the ecosystems in which they live. The term niche is used to describe these roles. • An organism’s niche includes the way in which the organism contributes to and fits into its environment. • All the physical, chemical, and biological interactions required for a species to survive, grow, and reproduce are part of the organism’s niche

  19. Example of a Niche • Example: Great Blue Heron’s live near water where they can fish and nest in nearby trees and bushes. Because of their long legs, they can find food in deeper water, which allows them to occupy a niche that other herons with shorter legs cannot

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