It is about different organization in the communities and ecosystem.

2. - science that deals with all forms
of life, including their classifications,
physiology, chemistry and interactions.
 ECOLOGY - derived from the Greek oikos
meaning "household," and logos meaning
"study."
 ENVIRONMENTAL
SCIENCE - scientific
discipline with ties to ecology, focuses on
how human interact with the environment.
 BIOLOGY

3. ORDER - a particular
pattern associated with living things
 ORGANIZATION - a group of people
identified by a shared interest or
purpose.
 BIOLOGICAL

4. 












Ecosystem
XII
Community
XI
Population
X
_ _ _ _Organism
IX _ _ _ _ _
Organ System
VIII
Organs
VII
Tissues
VI
_ _ _ _Cells
The Life Line
V_____
Organelles
IV
Molecules
III
Atom
II
Subatomic Particles
I


Figure 2.1 The Pyramid of Life: The 12 Levels of Biological
Organization

5. It
is because life begins at a
certain level of the pyramid
(Level V) and then continues
upward through each of the
higher levels of biological
organization Levels VI – XII).

6.  The
Three Lowest Levels of the Pyramid
1. SUBTOMIC LEVEL – protons, neutrons,
electrons
2. ATOMS – carbon (C), oxygen (O), hydrogen
(H), and nitrogen (N)

7. 3. MOLECULES

8. 4. ORGANELLES- literally means “little organ”.

9. 5. CELL – smallest unit of life

10. 6. TISSUE - epithelial tissue, muscle tissue,
connective tissue, nervous tissue

11. 7. ORGAN
8. ORGAN SYSTEM

12. 9. ORGANISM

13. 10. POPULATION

14. 11.

15. 12. ECOSYSTEM