Ecosystems

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.

Objectives

Abiotic Factor Ecosystem Avalanche Food WebBiotic Factor Natural SpeciesChannelization OverpopulationConsumer PollutionDecomposer PredatorDeforestation PreyDesertification

Vocabulary

Abiotic and Biotic FactorsBiotic Factors

Living things

Related to life

Examples: PlantsAnimalsFungusProtistsBacteria

Abiotic Factors

Non- Living things

Affect living things

Examples:Habitats

PondForestDesert

Weathersun

Vs.

Abiotic and Biotic Factors

+ =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 FactorsIf a single factor is changed, perhaps by pollution or natural phenomenon, the whole system could be altered.

Abiotic and Biotic Factors

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

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.

Pollution

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.

Pollution

What are the effects of pollution?Health problems in humansReduced ozone layer around the

EarthAnimal species wiped outGlobal warmingAcid rainSmog

Pollution

Why do people pollute the Earth?

People pollute the Earth because of…IgnoranceEconomic benefitsNot enough money to clean up pollutionAccidents ( i.e. oil spills)

Pollution

PollutionWe can prevent pollution by going green.

What does going green mean?

Lets research ways to GO GREEN!

Natural environmental change is the natural occurrences in nature that affect or change the ecosystem.

Examples: VolcanoesAvalancheEarthquakesForest firesetc

Natural Environmental Change

How do these natural

occurrences change the

Earth’s surface?

Famous Examples of natural occurrences that have changed the Earth.City of PompeiiMt. St. Helen eruptionHurricane KatrinaJoplin tornado

Natural Environmental Change

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.

Natural Environmental Change

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/ind

ex.html

Natural Environmental Change

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 Web (Transfer of Energy)

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.

Food Web

Let’s talk about…species Consumers PredatorPrey

Herbivores Decomposers OverpopulationOmnivores Natural Species

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 Web

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 = herbivoresAnimals that eat other animals = carnivoresAnimals and human who eat both =

omnivoresDecomposers like bacteria and fungi feed

on decaying matter

Food Web

If small or big changes happen, food webs are affected as well. In turn, this changes the ecosystem.

http://www.teachertube.com/viewVideo.php?title=Food_Webs&video_id=230358

Food Web

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.