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Basic Ecology
Life and the Environment
Topics *1011 *1012 *1019
Ms. Morris
Life and the Environment
• Biosphere – The part of Earth that
supports life
• Biome – Largest terrestrial ecosystems
• Ecosystem – Smaller distinct areas of
biomes and biospheres
• Community – All living things within an
ecosystem
• Population – The members of the same
species sharing a habitat
Biosphere
Biome
Organism
Population
Ecosystem
Images:
www.solarviews.com
www.esp.cr.usgs.gov
www.flickr.com
Community
Life and the Environment
• Habitat – Where specific plant and
animal species are naturally found
• Niche – The effects an organisms has on
it’s environment, and the effects an
environment has on an organism
Succession
• Progression that results in a stable
community
• Primary Succession
– A series of changes which occur in an entirely
new habitat which has never been colonized
before
• Secondary Succession
– A series of changes which take place in a
previously colonized, but disturbed or
damaged habitat
Image: www.geo.arizona.edu
Primary Succession
Image: www.geo.arizona.edu
Secondary Succession
Questions:
• Explain - in your own words - each of the
following:
–
–
–
–
–
–
Biosphere
Biome
Ecosystem
Community
Population
Organism
• Explain the differences between
– Primary Succession
– Secondary Succession
• Turn in to Ms. Morris by the end of the day
(10 points).
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