Transcript Interdependence ppt

 What rights did the fictional plants and
animals declare?
 Why should these “rights” be granted?
 Why can’t the plants and animals have
freedom from humanity?
 What rights did the fictional plants and
animals declare?
Life, habitat, good soil, clean air, pure
water
 Why should these “rights” be granted?
All living things need adequate resources
to grow and reproduce
 Why can’t the plants and animals have
freedom from humanity?
All living things need other living things
to survive
• S7L4a. Demonstrate in a food web that
matter is transferred from one organism to
another and can recycle between organisms
and their environment.
• S7L4c. Recognize that changes in
environmental conditions can affect the
survival of both individuals and entire
species.
• S7L4d. Categorize relationships between
organisms that are competitive or mutually
beneficial.
Two or more things
that depend on
each other
• Organisms can change over time
• Organisms adapt to their
environment
• What happens if an organism does
not adapt?
• If organisms do not adapt, then the
organism or population can die
out (become extinct)
As the prey decreases, there is less food for the predator, so they die
off. The fewer predators, the easier it is for the prey to reproduce, so
their population shoots up. As more food is available, the predator
population jumps, until they begin over eating their food supply and
the prey decreases, beginning the cycle again.
Sunny Meadows Animation
• Natural events such as earthquakes, fires,
storms, and drought
• Competition among organisms
• Human factors:
– Pollution
– Land development for roads, industries,
homes
– Introduction of New Species
With a partner, look at the images
on the next few slides and identify
ways in which these natural or
man-made events affect
ecosystems.
Kudzo It’ll Grow on You!
Activities for
Conditions that
Affect Populations
[see resources]
The robin may also have
to compete with the
flicker bird to get the
caterpillar
A robin in a meadow
finds a caterpillar and
swallows it. This is one
obvious way organisms
in an ecosystem interact
Ants work together to build
a nest, collect food, and
defend the colony
1.
2.
3.
4.
5.
6.
7.
8.
Mutualism
Mutualism
Commensalism
Parasitism
Commensalism
Mutualism
Commensalism
Parasitism
o Study Jams: Symbiosis
o Basic Symbiosis Video:
https://www.youtube.com/watch?v=zTGcS7vJ
qbs
o Symbiosis Songs [select one]:
o https://www.youtube.com/watch?v=1zLTwQklddc
o https://www.youtube.com/watch?v=xNm7dg3Biy
U#t=84