Post on 20-Jan-2016
Chapter 21.1Environmental Problems
How to do a Pre-read
1. Properly head paper; include title with location and description; Number page
2. List Vocabulary words (no definitions)
3. List Objectives (can paraphrase using words you understand)
4. Read over SRQ’s
Pre-read
PollutionRenewable resourcesNonrenewable resources
overpopulationbiodiversitybiodegradable
• Describe major types of pollution• Distinguish (compare and contrast) between
Renewable and nonrenewable resources • How do Alien species thrive (succeed)• How does destruction of habitat affect organisms?• What impact does Human Population Growth have on
the environment?
Vocabulary:
Objectives:
N-1
Notes:Pollution is the presence of harmful substances, called pollutants, in an environmentTypes of Pollution:•Solid Waste - GarbageMost goes to landfills where it poses threats12Kg (26.5 lbs) waste/person/ week in USA Improper burning causes air pollution
Hazardous waste – harmful to humans and environment medical wastes wastes from factories, etc.
from home – paints, batteries, detergents
Biodegradable packaging (4.2min) http://www.youtube.com/watch?v=GMYANdN0SAY
Types of Pollution:
• ChemicalToxic – poisonousPCB’s, refrigerants (CFC’s) – mostly banned due to damage to ozone layerLead paints, medicines
Radioactive waste Hazardous – can cause cancers,
leukemia, and birth defects From nuclear power plants Take thousands of years to break down
and become “harmless”
Types of Pollution:
• HeatIncrease in greenhouse gases (CO2)Increase/decrease of temperature of
Earth – Global WarmingExtreme weather and temperatures
• Noise Loud noises can affect the ability to
hear and thinkCan lead to hearing loss
Noise and Whales (2.3min) http://www.youtube.com/watch?v=dDLtWdBRzPk&feature=related
Section Review Questions
How to write SRQ’s 1.) Read question 2.) Rephrase the question as part of the answer – do NOT rewrite question 3.) Write each answer in complete sentences. 4.) Skip space between answers to allow for editing
SRQs pg 5001) Two ways pollution can be harmful are...
2) Loud noise can be a pollutant because….
3) Hospitals are helpful because……. But they can be harmful because …… Refrigerators are helpful because … But can be harmful because … Concretes can be helpful by ….. But can be harmful because ….
N-1C
Chapter 21.1b Notes:• Distinguish between renewable and
nonrenewable resources:Renewable resources are those that can be used over and over again. There is an unlimited supply Non-renewable resources are those that can be used only once. Available in a limited supply
N-1C
• Can be used over and over
• Unlimited Supply
• Water, solar power, wind
• Involve with energy
• Natural resources
• Can only be used 1X• Limited supply• Fossil Fuels – coal, oil, petroleum
• How do Alien species thrive (succeed)Alien species are organisms that move into a new
environmentCan be carried unintentionally on clothing
or in luggage etc. – zebra mussels came on ship hulls
Are able to thrive due to lack of natural predators in new area
Some alien species were brought here for a purpose – dandelions and tomatoes are crops
Become invasive if they impact environment, taking resources away from native species
N-1d
Invasive SpeciesA species is considered invasive if it demonstrates
one or more of the following: alters ecosystem functionBecomes established in undisturbed natural areasPrevents or depresses regeneration of native
speciesLacks natural predators
Invasive Plants PA http://www.dcnr.state.pa.us/cs/groups/public/documents/document/dcnr_20026634.pdf
Describe a possible connection between
alien species and endangered species
Endangered Species are those species whose population numbers have fallen dangerously low, and may be unable to maintain their numbers in the wild.
• Effects of habitat destructionBiodiversity means the variety of life (bio = life; diversity = variety). It refers to the many different species found in a particular habitat
Forests – trees provide oxygen, furniture, fuel, food, etcDeforestation is the clearing of forest land often for housing or farming, or for resources
Tropical rainforest land is not very fertile (lacks nutrients) so is not good for farming
Effects of habitat destructionEvery time a habitat is destroyed, biodiversity is lost
• Effects of habitat destructionWetlands – help control flooding, filter pollutants,
provide breeding grounds, help prevent erosion, restore underground water suppliesWere not always valuedOften drained and filled for houses etc Can also be destroyed by pollution
Wetlands (3min) http://whyy.pbslearningmedia.org/resource/lsps07.sci.life.eco.wetlands/the-value-of-wetlands/
Biodegradable refers to products that can break down in the environment. Plastics are not biodegradable and often pollute oceans; animals get caught in plastic rings and bags
Ocean of Garbage (2.13 min) http://www.youtube.com/watch?v=IbGDNpRTKxg&feature=related
Effects of habitat destructionMarine – often damaged by oil spills, pollution can be carried from one ocean to another
Monoculture and the Irish Potato Famine: 1845-1848
• Affects of Human Population GrowthOverpopulation occurs when the number of individuals becomes so large that they can’t get all the food, water, and other resources to survive.
Human population has been growing at much faster rate over recent years; could reach a point of being too big for planet
http://www.worldometers.info/
SRQs pg 504
1) Alien species often thrive in foreign lands because they have no natural predators. They become invasive species when they push out native species.
2) The larger the human population is, the more energy and resources are needed, and the more waste will be produced. Pollution problems happen when there is more waste being produced than can be disposed of without harming the environment.
3) Destruction of wetland habitats affects humans in many ways. Loss of this habitat can increase flooding and erosion, increase pollutants, and decrease underground water supplies.
Chapter 21.2Environmental Solutions
Pre-read
ConservationRecyclingResource recovery
• Explain the importance of conservation• Describe the 3 R’s and their importance• Explain how habitats can be protected• List ways you can help protect the Earth
Vocabulary:
Objectives:
N-4
Pg 505-508
Pg 509-511
•Explain the importance of conservation
Conservation is the wise use of and the preservation of natural resources
Practicing conservation means using fewer natural resources – riding a bike or walking instead of drivingcomposting instead of using chemical fertilizers
Conservation prevents soil and water pollution
•Describe the 3 R’s and their importance
Going Green with Timon and Pumba (12 min)https://www.youtube.com/watch?v=OYP2_wsDkV4
•Describe the 3 R’s and their importance
Going Green with Timon and Pumba (12 min)https://www.youtube.com/watch?v=OYP2_wsDkV4
REDUCE waste and use of nonrenewable resources•Less packaging; biodegradable packaging
•Organic farming reduces use of pesticides and fertilizers
•Alternative sources of energy – solar, wind, water
REUSE products and water• Rechargeable batteries• Plastic bags or cloth bags• Organic farming reduces use of pesticides and fertilizers
85% of water used in homes goes down drain• Greywater is water reclaimed from home use from
bathroom sinks, showers, tubs, and washing machines. It has not come into contact with feces
• may contain traces of dirt, food, grease, hair, and certain household cleaning products; may look “dirty,” but is a safe and even beneficial source of irrigation water in a yard.
RECYCLE a form of reuse
Recycling requires breaking down trash and making it into something new
Only 11% of US garbage is recycled!!
Resource recovery is the process of transforming garbage into electricity
Waste collected in USA could produce energy = to 15 large nuclear power plants!
Single stream with Mr. Can
https://www.youtube.com/watch?v=629clJ5VZFc
SRQs pg 508
1. Conservation is …
2. Three main ways to conserve natural resources are…
3. Conserving resources reduces pollution and other damage to the Earth by …
•Explain how habitats can be protected
Habitats can be protected by • using fewer chemicals – pesticides, fertilizers; develop
more biodegradable pesticides and fertilizers; use natural pesticides specific to pest (aphids)
• reducing pollution – handle hazardous and toxic wastes appropriately; avoid letting wastes get into waterways
• avoiding habitat destruction – conserve current habitats; use resources at a sustainable rate
• protecting species – enforce Endangered Species Act• using alternative energy resources such as wind, solar
and water
•What You Can Do
http://storyofstuff.org/Solutions (9min)
biodegradable plastic bottlehttp://www.biotaspringwater.com/
SRQs pg 511
1. Biodiversity is important because …
2. Habitats must be preserved and protected …
3.3. ReduceReduce: all except #16
ReuseReuse: 2, 8, 10, 11, 12, 13, 14
RecycleRecycle: 1, 3, 6, 15, 16
You only need to reuse a bag (cloth type) 11 times before you've helped to reduce the environmental impact of paper and plastic bags.
How it all ends (10 min)http://www.youtube.com/watch?v=mF_anaVcCXg
Global climate destabilization Don't call it global warming!
Biosphere 2
Biosphere 2 (2012) (9min)
http://www.youtube.com/watch?v=VLroU3PaO3g&list=PLZBxXB2X3kcz1bjUuhkI6-Isua7IcjRC3&index=9
Jane Poynter TED (16 min)
http://www.youtube.com/watch?v=a7B39MLVeIc&list=PLZBxXB2X3kcz1bjUuhkI6-Isua7IcjRC3&index=1