1. Section 1 – ecosystems Section 2 – evolution Section 3 – diversity of life

2. An ecosystem is an area that …includes all the organisms and the physical (nonliving) environment

3. CORAL REEF DESERT FOREST STREAM

4. they do not have clear boundaries living things can move from one ecosystem to another

5. Energy Minerals Carbon dioxide (CO2) Water (H2O) Oxygen (O2) Soil Living things And others…. If one part (component) of an ecosystem is destroyed, or changes, the entire ecosystem may be affected

6. ENERGY IN ECOSYSTEMS IS ESSENTIAL!!! In most ecosystems – the original source of energy is the SUN

7. Examples are……

8. Tides Mold Butterflies Minerals Precipitation – snow, sleet, rain, … Bacteria Feather Wind Soil Earthworms Scat (poop)

9. Each of the following slides shows an ecosystem, ……think of the biotic and abiotic factors that might be present in each

10. Coral Reef

11. MARSH

12. VACANT LOT

13. MOUNTAIN TOP

14. Hydrothermal Vent, Ocean

15. Badlands, South Dakota

17. Organism…. a single individual of a species SPECIES – organisms that are… structurally similar, naturally interbreed (mate), and produce fertile offspring

18. Are these members of the same species?

20. Population – includes all the members of a single species within a given area Community – includes all the species (living things) within a given area Ecosystem – includes all the living (biotic) and nonliving (abiotic) things within a given area

21. Biosphere – the areas of Earth where all life exists – includes all the ecosystems on Earth

22. organism population community ecosystem biosphere

23. HABITAT - the place that an organism lives (its address) Every habitat has specific biotic and abiotic factors Organisms tend to be well suited to their natural habitats What is the habitat of the chipmunk?

24. An organism’s niche includes…… 1. the environmental factors necessary for its survival 2. its interactions with other organisms 3. its interactions with the environment (its physical surroundings) What is the niche of the chipmunk?