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13.1 Ecologists Study Relationships. 2.1 Atoms, Ions, and Molecules. Set up Cornell Notes on pg. 85 Topic: 13.1 Ecologists Study Relationships Essential Question(s) : What is the importance of studying the Levels of Organization?. Key Concept
2.1 Atoms, Ions, and Molecules
Set up Cornell Notes on pg. 85
What does the word relationship mean to you?
Ecologyis the study of the relationships among organisms and their environment.
If you were an ecologist, what types of questions would you want answered about this Grizzly Bear?
Ecologistsstudy environments at different levels of organization.
1. An organism is an individual living thing
2. A population is a group of the same species that lives in one area
3. A community is a group of different species that live together in one area.
Ex: alligators, turtles, grass, and birds.
4. An ecosystem includes all of the living organisms as well as the non-living things Ex: All animals, plants, soil, water, rocks and other nonliving things
5. A biome is a major regional or global community of organisms characterized by the climate conditions and plant communities that thrive there.
Must include: each L.O.O, labels, color, circles, one
paragraph description of your diagram describing what is in each level
(may NOT use the example provided in class)
*Might be easier to start with an animal you know something about
Organism: 1 animal (Alligator)
Population: animals (Alligators)
Community: animals and plants (Alligators, turtles, birds, moss,)
Ecosystem: living and non-living
Biome: desert, ocean, chaparral, rainforest, forest, mountains, fresh water, grassland, savanna, etc…. (463)
1. Observation is the act of carefully watching something over time.
Direct surveysused for species that are easy to follow. Ex: You count how many deer are in the field
Ex: You want to test how a fungus reacts to heat.
In your lab experiment you turn up the temperature.
Negative: not reflective of the complex interactions in nature.
Negative: may not help determine actual cause and effect.
Ex: You want to know the effect deer have on a type of grass in the forest, so you block off a part of the forest to keep out the deer. By monitoring the fenced and unfenced area, you can determine the deer’s effect on the grass.
Ecologists use data transmitted by GPS receivers worn by elephants to develop computer models of the animal’s movements.If observation and experimentation don’t work…turn to modeling
3. Modelingallows scientists to learn about organisms or ecosystems in ways that would not be possible in a natural or lab setting.