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Transcript
Slides for Students
Figure 1-21 Levels of Organization
All living things are connected in the
biosphere
Section 1-3
Biosphere
The part of Earth
that contains all
ecosystems
Biosphere
Ecosystem Community and
its nonliving
surroundings
Hawk, snake, bison, prairie dog, grass, stream, rocks, air
Community Populations that
live together in a
defined area
Hawk, snake, bison, prairie dog, grass
Population
Group of
organisms of one
type that live in
the same area
Bison herd
Go to
Section:
Figure 1-21 Levels of Organization
Section 1-3
continued
All living
things are connected
in the biosphere
Organism Individual living
thing
Bison
Tissues, organs,
Groups of and organ systems
Cells
Brain
Nervous tissue
Cells
Nervous system
Smallest functional
unit of life
Nerve cell
Groups of atoms;
smallest unit of
Molecules most chemical
compounds
Go to
Section:
Water
DNA