ecoystemunit2 for 5thgrade2015
Post on 22-Jan-2018
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ECOSYSTEM
unit 2 for 5th grade students
WHAT IS A ECOSYSTEM?
An ECOSYSTEM has got three components:
1. The biotope ( non-living components)
2. The biocenosis (living components)
3. The relationships in an ecosystem.
A. aquatic
B. land
C. mixed
FEEDING RELATIONSHIPS
OTHER RELATIONSHIPS
Relationships between the same species
1. Gregarious association
2. Families
3. Societies
Relationships between different species
• Mutualism
• Parasitism
• Commensalism
HOW LIVING BEINGS ADAPT
Anatomical adaptations
Behavioural adaptations
HUMANS AND ECOSYSTEM
overexploit resources
pollute
transform the environment
we distribute sources poorly.
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