Section 1: Organisms and Their Relationships - Damm's Science Page

Section 1: Organisms and Their Relationships

Biotic and abiotic factors interact in complex ways in communities and ecosystems.

K What I Know

W What I Want to Find Out

L What I Learned

Essential Questions

? What is the difference between abiotic factors and biotic factors? ? What are the interactions between the levels of biological communities? ? What is the difference between an organism's habitat and its niche?

Copyright ? McGraw-Hill Education

Organisms and Their Relationships

Vocabulary

Review

? species

New

? ecology ? biosphere ? biotic factor ? abiotic factor ? population ? biological community ? ecosystem ? biome

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? habitat ? niche ? predation ? symbiosis ? mutualism ? commensalism ? parasitism

Organisms and Their Relationships

Ecology

? Organisms depend on other organisms and nonliving factors in their environment for survival.

? Ecology is the scientific discipline in which the relationships among living organisms and the interaction the organisms have with their environments are studied.

? Ecologists observe, experiment, and model using a variety of tools and methods.

Copyright ? McGraw-Hill Education

Organisms and Their Relationships

The Biosphere

? The biosphere is the portion of the Earth that supports life. ? Includes landmasses, freshwater, saltwater, lower portions of the

atmosphere, and areas beneath the Earth's surface

Copyright ? McGraw-Hill Education

Organisms and Their Relationships

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