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Man and Environment
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Transcript of Man and Environment
BBA Part1_1 (Gajaseni, 2001) 2
What is environment?
Q. What is environment? A. It depends!
Q. Depends on what? A. Depends on "Environment
of whom?"
BBA Part1_1 (Gajaseni, 2001) 3
Q. How about “environment of human”?
A.Wait and see!
BBA Part1_1 (Gajaseni, 2001) 4
Q. Who is "human"? A. Wait until the next section!
Q. Is human a living object? A. ?
BBA Part1_1 (Gajaseni, 2001) 5The human animal
BBA Part1_1 (Gajaseni, 2001) 6
Q 1. What is living object?
Q 2. What are differences between living and non-living objects?
BBA Part1_1 (Gajaseni, 2001) 7
A. From biological perspective:
Life = biosystems organized by interactions between biological components interacting with physical environments, and become a unified whole with capacity to maintain homeostasis and self-perpetuation
BBA Part1_1 (Gajaseni, 2001) 8
Sign of life
1. Highly complex organization = all other characteristics of life emerge from an organism’s complex organization
BBA Part1_1 (Gajaseni, 2001) 9
2. Self-homeostasis = Self-maintenance of a
steady-state internal environment in the
variations of external environment.
BBA Part1_1 (Gajaseni, 2001) 10
3. Self-perpetuation = Life comes only from life.
BBA Part1_1 (Gajaseni, 2001) 11
BBA Part1_1 (Gajaseni, 2001) 12
BBA Part1_1 (Gajaseni, 2001) 13
4. Growth and development = the increment of volume and changes in structure and functions to suit with new form of life
BBA Part1_1 (Gajaseni, 2001) 14
BBA Part1_1 (Gajaseni, 2001) 15
Insert larva picture
BBA Part1_1 (Gajaseni, 2001) 16
5. Interactions = Life needs energy and matter utilization for maintenance of life
BBA Part1_1 (Gajaseni, 2001) 17
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BBA Part1_1 (Gajaseni, 2001) 19
6. Adaptation = Life evolve as a result of the interaction between organisms and their environments
BBA Part1_1 (Gajaseni, 2001) 20
BBA Part1_1 (Gajaseni, 2001) 21
7. Response = Life adjusts itself to the environment.
BBA Part1_1 (Gajaseni, 2001) 22
BBA Part1_1 (Gajaseni, 2001) 23
BBA Part1_1 (Gajaseni, 2001) 24
BBA Part1_1 (Gajaseni, 2001) 25
From biological perspective, these are biological spectrum
Biotic components
BBA Part1_1 (Gajaseni, 2001) 26
รูป biotic component
CellGene Org
an
Organism
Populations
Communities
BBA Part1_1 (Gajaseni, 2001) 27
Biotic components cannot survive in isolation.
They must interact with physical or a biotic environments.
BBA Part1_1 (Gajaseni, 2001) 28
Generalized diagram of inputs, throughputs, and outputs in a system
System Throughputs (flows)System Inputs
System Outputs
Information
Energy
Matter
Useless information
Waste heat
Waste matter
BBA Part1_1 (Gajaseni, 2001) 29
Interaction between each biotic level with physical environment through energy, matter, and information produces characteristic functional system.
"Biosystem" or "life"
BBA Part1_1 (Gajaseni, 2001) 30
Organizational hierarchy in nature can be seen from "universe" down to "subatomic particles".
BBA Part1_1 (Gajaseni, 2001) 31
รูป solar system
Milky way
Galaxy
Universe
Solar system
Earth
BBA Part1_1 (Gajaseni, 2001) 32
The natural world is organized, diverse, dynamic, and yet complex.
BBA Part1_1 (Gajaseni, 2001) 33
Q. How can life be seen in nature?
A. A hierarchy of organization of matter.
BBA Part1_1 (Gajaseni, 2001) 34
Fig 3-6
BBA Part1_1 (Gajaseni, 2001) 35
Then, there is hierarchy of biosystems.
BBA Part1_1 (Gajaseni, 2001) 36
Q. What is the determinant of life?
A. Environment by evolutionary processes.
BBA Part1_1 (Gajaseni, 2001) 37
Fig 20’
BBA Part1_1 (Gajaseni, 2001) 38
Q. How did life emerge on the Earth?
BBA Part1_1 (Gajaseni, 2001) 39
Fig 8-11 (21’)
BBA Part1_1 (Gajaseni, 2001) 40
Transparency 78
Fig 6-5 summary of the evolution of the earth and its life.
Chemical evolution
1 billion years
Biological evolution3.7 billion
years
BBA Part1_1 (Gajaseni, 2001) 41
Q. Is human a hierarchy of organization of matter?
BBA Part1_1 (Gajaseni, 2001) 42
Q. What is the difference of “interaction between man and environment” and “interaction between other organisms and environment”?
BBA Part1_1 (Gajaseni, 2001) 43
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A. Organisms adapt themselves to the environments.
While
“Human modify environments to suit themselves ”.
BBA Part1_1 (Gajaseni, 2001) 45
Human environment
2 groups
BBA Part1_1 (Gajaseni, 2001) 46
1. Natural environment: 4 spheres
1.1 Biosphere = Space occupied by life 1.2 Atmosphere = Space occupied by air 1.3 Lithosphere = Space occupied by solid 1.4 Hydrosphere = Space occupied by
water
BBA Part1_1 (Gajaseni, 2001) 47
How do the 4 spheres really exist?
BBA Part1_1 (Gajaseni, 2001) 48
Atmosphere
Hydrosphere Lithosphere
Ecosphere
Biosphere
BBA Part1_1 (Gajaseni, 2001) 49
2. Man-made environment
2.1 Anthropogenic ecosystems
2.2 Physical structures
BBA Part1_1 (Gajaseni, 2001) 50
What are the Functions of Natural Environment?