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.