Transcript What is meant by the “Circle of Life”?

Aim: How does biodiversity
increase the stability in an
ecosystem?
DN: What will there always
be more of in an ecosystempredator or prey? Explain.
What is meant by
the “Circle of Life”?
All living things are
dependent on one another
Why is this important?
Why are there so
many different
species on earth?
Due to the evolution of related
organisms ADAPTING TO
different environments
Biodiversity
The diverse number of
species (variety of species) in
a given area
Look for the
biodiversity of the soil
Why is biodiversity
important?
What happens
If insecticide
Is sprayed?
All living things are
interdependent on one another
How do living things
depend on each other?
All organisms
are interrelated
by the food
web. If one
organism in the
food web
decreases, then
others will
either increase
or decrease
What happens to an ecosystem
when biodiversity decreases?
Ecosystem stability decreases
Stability – the ability of the different
populations of organisms to survive an
environmental change.
How does great
biodiversity maintain
ecosystem stability?
In an ecosystem with
great biodiversity,
organisms rely on
more than one type of
food, increasing their
stability.
If one species dies off,
others may step in and take
over its niche
Which ecosystem has
greater stability?
The forest has greater stability because
it has greater biodiversity
How is biodiversity lost?
 Natural
disaster & human activities
Why is biodiversity
important to us?
 It
ensures the availability of a rich
variety of genetic material.
 Biodiversity has provided us with
medicines, natural insecticides, & other
useful resources.