Unit 2: ECOLOGY

We share the Earth… Ecology & Environmental Issues

with a whole lot of other creatures…

What is ecology? Ecology the study of the interactions of living things with each other and their physical environment

All ecosystem(environment) can be broken down as biotic and abiotic!

Part I: Abiotic Factors vs Biotic Factors physical and chemical factors which affect the ability of organisms to survive and reproduce Abiotic Factors based on the picture Sunlight Oxygen Soil Nutrients Water

More Abiotic Factors: 6. range of temperatures 7. availability of inorganic substances such as minerals 8. supply of gases such as oxygen, carbon dioxide, and nitrogen 9. pH

Biotic Factors based on the picture All the living organisms that inhabit an environment Biotic Factors based on the picture Total number of plants Total number of small fish, medium sized fish, large sized fish, etc. Total number of decomposers

Biotic Factors in the Mangrove Ecosystem Biotic factors are living things. plants animals fungi bacteria plants

More Practice with Abiotic and Biotic Factors

Directions: Using the picture, make a list of all the factors that are abiotic and biotic.

Practice Reading Comprehension and Citing Textual Evidence

You must cite where you got the information from

Part II: Levels of Organization Level 1. Organism An individual living thing that is made of cells, uses energy, reproduces, responds, grows, and develops For Example 1 deer

Level 2: Population a group of organisms, all of the same species, which interbreed and live in the same area at the same time; competition occurs For example - All the deer in this on this mountain

copyright cmassengale Level 3: Community All the populations of different species that live in the same place at the same time. Note: not including water, air, oxygen For example: All the zebra, wilder best, trees, grasses, etc. interacting. copyright cmassengale

Level 4: Ecosystem All the different populations interacting with the non-living factors. Include all the fish, snakes, plants, rock, water, soil, minerals

Levels of Organization Illustration

Levels of Organization Illustration

Practice with Identifying the level of organization Which level of organization is shown by the diagram?

Practice with Identifying the level of organization Which level of organization is shown by the diagram?

Practice with Identifying the level of organization Which level of organization is shown by the diagram if you take away the water, soil, air?

You have completed assignment # 20 Congratulation!!!! You have completed assignment # 20