Download Ecosystems - Team Safari

 Students will be able to identify between
abiotic factors and biotic factors.
 Students will explain the harmful and
beneficial activities done to the ecosystem.
 Students will predict possible solutions to
natural environmental change.
 Students will diagram land and water food
webs and the transfer of energy.
 Abiotic Factor
 Avalanche
 Biotic Factor
 Channelization
 Consumer
 Decomposer
 Deforestation
 Desertification
Ecosystem
Food Web
Natural Species
Overpopulation
Pollution
Predator
Prey
Biotic Factors
Abiotic Factors
Living things
Non- Living things
Related to life
Affect living things
Examples:
Plants
Animals
Fungus
Protists
Bacteria
Examples:
Habitats
Pond
Forest
Desert
Weather
sun
Vs.
+
Biotic Factors
=
Abiotic Factors
Ecosystems
Biotic and abiotic factors combine to create a system or more precisely, an
ecosystem. An ecosystem is a community of living and nonliving things
considered as a unit.
The Impact of Changing Factors
If a single factor is changed, perhaps by pollution or natural phenomenon,
the whole system could be altered.
List the abiotic and biotic factors you see in this
picture.
 Pollutants are waste material that
contaminate the water, air, or soil.
 Chemical make-up, concentration, and
persistence help determine the severity of
pollution to the environment.
 There are many types of pollution ranging
from air pollution to noise pollution.
 Humans cause pollution, but also have the
power to stop pollution.
 Pollution has been apart of civilizations for
centuries. Soot on the top of cave roofs,
show that in prehistoric civilizations even
had a problem with pollution.
 The forging on metal is a turning point in
the significant increase in air pollution
according to some sources.
 Pollution became a popular issue after
WWII.
 In the 1950s and 1960s the United States
became aware and proactive with pollution
issues.
 Legislation was passed to protect the
environment with acts like, the noise control
act, clean air act, and the clean water act.
 What are the effects of pollution?
 Health problems in humans
 Reduced ozone layer around the Earth
 Animal species wiped out
 Global warming
 Acid rain
 Smog
Why do people
pollute the Earth?
 People pollute the Earth because of…
 Ignorance
 Economic benefits
 Not enough money to clean up pollution
 Accidents ( i.e. oil spills)
Lets research ways to
GO GREEN!
We can prevent pollution by going green.
What does going green mean?
 Natural environmental change is the natural
occurrences in nature that affect or change
the ecosystem.
 Examples:
 Volcanoes
 Avalanche
 Earthquakes
 Forest fires
 etc
How do these
natural
occurrences
change the Earth’s
surface?
 Famous Examples of natural occurrences
that have changed the Earth.
 City of Pompeii
 Mt. St. Helen eruption
 Hurricane Katrina
 Joplin tornado
What do you think the Earth
could look like in 200 years from
now? Why? 1000 years from
now?
 Our world is always changing. Look out your
window long enough, and you might see the
weather change. Look even longer, and
you'll see the seasons change. The Earth's
climate is changing, too, but in ways that
you can't easily see.
 The Earth is getting warmer because people
are adding heat-trapping gases to the
atmosphere, mainly by burning fossil fuels.
These gases are called greenhouse gases.
http://www.epa.gov/climatechange/kids/impacts/effects/index.html
 Lets use this calculator to see how we can help our
environment…
 http://www.epa.gov/climatechange/kids/calc/index.ht
ml
My Results:
Based on what you're already doing, you're avoiding 2,606 pounds of carbon dioxide
emissions per year, compared with the average American.
This is equivalent to the emissions from driving a car 2,780 miles.
If all the students in the United States took the actions you checked, together they
would save a total of 204,238,528,000 pounds of carbon dioxide emissions per year.
Let’s do some math!
 A food web is connection between
difference species in an ecosystem.
 There are land and water food webs also
known as terrestrial and aquatic food webs.
 If one food web is disrupted, either by
pollution or other means, every animal and
consumer is affected, and this can lead to
extinction of a species.
 Food webs describe how your foods supply you
with the energy and nutrients you need.
 According to Pennsylvania State University,
only about 10 percent of the energy an
organism possesses is passed on to the next
when it is eaten. This means food chains rarely
consist of more than six species. Food chains
usually display plants at the start, herbivores in
the middle and predators at the top.
Let’s talk about…
species
Consumers
Predator
Herbivores
Decomposers
Overpopulation
Omnivores
Natural Species
Prey
 A food web is made up of many food chains.
 A food chain is a series of organisms that are
all dependent on each other as a source of
food.
Food
Chain
Food
Web
 Plants are known as producers because they
use energy from the sun to make their own
food
 Animals cannot make their own food so they
must eat plants or other animals.
 Animals that only eat plants = herbivores
 Animals that eat other animals = carnivores
 Animals and human who eat both = omnivores
 Decomposers like bacteria and fungi feed on
decaying matter
 If small or big changes happen, food webs
are affected as well. In turn, this changes
the ecosystem.
 http://www.teachertube.com/viewVideo.ph
p?title=Food_Webs&video_id=230358
The further along the food chain you go, the less food
(and hence energy) remains available.
http://www.vtaide.com/png/foodchains.htm
Break down each ingredient in this
picture and put it into a food web.