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Food Chains

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by

McIver Mann

on 24 September 2013

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Transcript of Food Chains

Food Webs
What is a food web
Energy Transfer
Energy transfer is an important aspect of a food web. Energy transfer is the transfer of energy from one organism through another through a food web. Here is the basic format for how energy travels:
Sun --> Producer --> Primary Consumer --> Secondary Consumer --> Tertiary Consumer
Other parts of food webs
The Big Idea
The big idea is that a food chain shows all of the feeding relationships between organisms in an environment, and it shows how energy is transferred from one organism to another. Energy is transferred from the sun to the producer to the primary consumer to the secondary consumer then finally to the tertiary consumer. Other parts of food webs are habitat, ecosystems, limiting factors, and tolerance.
Terrestrial Food Web -
Deciduous Forest
Aquatic Food Web
By: McIver Mann
A food web is a model that shows many different feeding relationships between organisms in an environment. Energy transfer is an important aspect of a food web. Energy transfer is the transfer of energy from one organism through another through a food web. All of our energy comes from food, the sun, and photosynthesis. Here are two different examples of food webs.


phytoplankton
producer
zoo plankton
primary consumer
orca whale
tertiary
consumer
shark
tertiary
consumer
manta ray
primary consumer
small fish
secondary consumer
tuna fish
tertiary consumer
leaf/plant
producer
grasshopper
primary consumer
ant-primary
consumer
spider
secondary consumer
mouse
secondary consumer

hawk
tertiary consumer
snake
tertiary consumer
See how each organism loses energy the farther up it is on the food chain
Energy Transferred
0.01%

0.1%

1%

10%

100%
All of our
energy
comes from
the sun
food
photosynthesis
Ecosystem
An ecosystem is all of the living and nonliving things in an area that interact with each other .
Habitat
A habitat is the location in which an organism/population lives. Habitats provide the population/organism with shelter, food, and water for them to grow
Limiting Factors
A limiting factor is an factor that limits the growth or development of a population.
Tolerance
Tolerance is the ability for an organism to withstand certain aboiotic factors.
For example: A drought could limit the number of plants which could limit a population of herbivores/primary consumers such as a population of deer
For example: a den is a fox's habitat or a human's habitat is our houses because our houses provides us with food, shelter, and water for us to grow

For example: humans can tolerate only certain temperatures (we can't survive in 200 degrees or -100 degrees)
For example: an ecosystem could be anything from a puddle to a desert to a rainforest.
175
125
75
25
0
175
125
75
25
0
We couldn't survive
in these conditions.
THANKS FOR WATCHING!
Full transcript