1. Levels of Organization

2. First the levels within an organism

3. 5 Levels of Organization
Cells
Tissues
Organs
Organ Systems
Organism

4. Cells
Cells are the smallest level of organization in living things.

5. Tissue Cells + Cells = Tissue
There are 4 types of tissue in your body:
Connective (bone, blood)
Nerve
Epithelial (skin, linings)
Muscle

6. Organ Tissue + Tissue = Organ
Organs are what we usually think about when we think about parts of the body

7. Organ System Organ + Organ = Organ System
You have 11 organ systems in your body.

8. All the organ systems make up an organism!
Now think on a big scale……

9. Big Scale!
Biosphere
Ecosystem
Community
Population
Organism

10. Let’s Start at the Bottom…
What is an organism? An organism is any one thing that is living (can be a plant, animal, insect, bacteria, etc)
Every organism has a job in its ecosystem, this job is called a niche
Example: an elephant

11. Populations…
What is a population? A population is all of the same kind of organism living in a certain place
Example: In the savanna, a herd of 20 elephants would make up one population

12. Communities…
What is a community? All the different populations living together and reacting in the habitat make up a unique community
Example: In the savanna, populations of elephants, populations of lions, and populations of zebras live and interact to form a community

13. Ecosystem and Biomes
Therefore, all the COMMUNITIES AND THE ABIOTIC (non-living) FACTORS in a certain place make up an ecosystem
* non-living-things like
Water, pH, soil, temperature
All the ecosystems
in a bigger geographic
location makes up a biome

14. What is a biome?
A biome is a large geographical region characterized by distinctive types of plants and animals and a specific climate
Sometimes people use the words “ecosystem” and “biome” interchangeably, meaning they can mean the same thing - However, technically an ecosystem can be much smaller than a biome (it can be as small as a puddle!)

15. Biosphere- all of the ecosystems (biomes) on Planet Earth
Finally…
Biosphere- all of the ecosystems (biomes) on Planet Earth