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Latin America’s Environmental Concerns Unit 7

Latin America’s Environmental Concerns

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Latin America’s Environmental Concerns. Unit 7. #1 Air Pollution in Mexico City. second most populated city in the world--Tokyo is first nearly 20 million people live here city’s population & location contribute to its bad air pollution problem - PowerPoint PPT Presentation

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Page 1: Latin America’s Environmental Concerns

Latin America’s Environmental Concerns

Unit 7

Page 2: Latin America’s Environmental Concerns

#1 Air Pollution in Mexico City◊ second most populated city in the

world--Tokyo is first◊ nearly 20 million people live here◊ city’s population & location

contribute to its bad air pollution problem

◊ considered to be the most polluted city in the world

Page 3: Latin America’s Environmental Concerns

#2 Air Pollution Over Mexico City

Page 4: Latin America’s Environmental Concerns

#3 Air Pollution Over Mexico City

Page 5: Latin America’s Environmental Concerns

#4 Causes of Air Pollution1. huge population = lots of cars2. high elevation--less oxygen so fuels

don’t fully burn--higher level of gases that harm eyes,

lungs, & the heart3. Sierra Madre mountains surround

city & trap in polluted air

Page 6: Latin America’s Environmental Concerns

#5 Surrounded by Mountains…

Page 7: Latin America’s Environmental Concerns

#6 Solutions◊ To reduce air pollution, the city

promotes public transportation (buses, subway).

◊ The city is also testing buses that run on cleaner burning fuels.

◊ new restrictions on car use◊ workshops to teach people about

the environment

Page 8: Latin America’s Environmental Concerns

How does geography play a role in Mexico City’s air pollution problem?A. It is one of the world’s largest

cities.B. The city has views of distant

snowcapped mountains.C. It lies in a bowl-shaped valley that

traps air pollutants.D. The cars and factories send

pollution such as lead, sulfur, and carbon monoxide into the air.

Page 9: Latin America’s Environmental Concerns

What are the main sources of air pollution in Mexico City?A. Intense sunlightB. The high altitudeC. Factories and carsD. Cars that produce little or no air

pollution.

Page 10: Latin America’s Environmental Concerns

Which solution is a way that the government is trying to reduce pollution in Mexico City?A. Ignoring cars with exhaust

problemsB. Reducing the number of buses

and trainsC. Making sure the population

continues to grow.D. Increasing the number of cars that

produce little or no air pollution.

Page 11: Latin America’s Environmental Concerns

Which solution to Mexico City’s air pollution problem would be most challenging to businesses?A. Closing factories 1 day a weekB. Using fuels that produce less

pollutionC. Having employees ride trains or

buses to workD. Asking citizens to leave their cars

at home 1 day a week

Page 12: Latin America’s Environmental Concerns

#7 Amazon Rainforest◊ largest rainforest in the world◊ most of the rainforest is in Brazil◊ experiences a hot, humid, & rainy tropical

climate◊ home to a huge variety of plants, trees,

insects, birds, & animals◊ produces 1/3 of the earth’s oxygen

Page 13: Latin America’s Environmental Concerns

Go to WWW.Brainpop.com and watch the video on

Tropical Rainforests

Page 14: Latin America’s Environmental Concerns

#8 Amazon Rainforest

Page 15: Latin America’s Environmental Concerns

#9 Destruction of the Amazon Rainforest◊ In the 1950s, the Brazilian government

began building a major highway system.• opened rainforest to loggers

◊ Brazil’s population has increased--parts of rainforest are being cut down to create farms

Page 16: Latin America’s Environmental Concerns

#10 Before…

Page 17: Latin America’s Environmental Concerns

#11 After…

Page 18: Latin America’s Environmental Concerns

#12 Results of Deforestation…◊ Plants & animals are losing their

homes; many are endangered, and some are becoming extinct.

◊ Loss of trees increases carbon dioxide, a gas that contributes to global warming.

Page 19: Latin America’s Environmental Concerns

#13

Page 20: Latin America’s Environmental Concerns

#14

Page 21: Latin America’s Environmental Concerns

#15

Page 22: Latin America’s Environmental Concerns

#16 Solutions…◊ The government is working to fix

the deforestation problem by passing laws on cutting down too many trees.

◊ What else can be done?

Page 23: Latin America’s Environmental Concerns

Which is a problem associated with deforestation?A. More oxygen is available on the

planet.B. Poor people earn money from

selling trees.C. Native people have too much

forest for their needs.D. There is less forest to produce

goods that humans need.

Page 24: Latin America’s Environmental Concerns

Why does deforestation increase when the value of crops and cattle go up?A. The value of timber goes up.B. Laws to protect the rainforest are

not enforced.C. People think they can make more

profit selling cattle and crops.D. Environmental groups work with

the government only when prices are down.

Page 25: Latin America’s Environmental Concerns

What is the main crop grown in areas of deforestation?A. CocoaB. RubberC. SoybeansD. Brazil nuts

Page 26: Latin America’s Environmental Concerns

The world gets about 20% of which resource from the Amazon Rain Forest?A. MedicineB. OxygenC. RubberD. Soybeans

Page 27: Latin America’s Environmental Concerns

◊Use the graph on pg. 18 of your CRCT book to answer questions 17-20

Page 28: Latin America’s Environmental Concerns

#17 Oil-Related Pollution in Venezuela

◊ One of the world’s leading producers of oil• has been producing oil for about 100

years◊ Oil production has boosted

economy• Main source of income for many

people◊ Oil production results in toxic

waste, air pollution, & oil spills

Page 29: Latin America’s Environmental Concerns

#18 Problems…◊ Venezuela’s coast has become

polluted with oil.• oil spills have damaged the

environment• hurts the ability of fishermen to earn

a living

Page 30: Latin America’s Environmental Concerns

#19 Result of Drilling for Oil…

Page 31: Latin America’s Environmental Concerns

#20 Problems…◊ Venezuela leads South America in

the production of carbon dioxide, which is a by-product of burning fossil fuels like natural gas & oil.• can cause breathing problems for

children & elderly• contributes to global warming

Page 32: Latin America’s Environmental Concerns

#21 Problems…◊ Oil businesses have damaged Lake

Maracaibo (largest lake in South America).

◊ Large amounts of oil have been removed from the area so the land is changing.• eastern shore of the lake is dropping

about three inches a year• government is having to take

precautions to keep water from flooding into nearby towns

Page 33: Latin America’s Environmental Concerns
Page 34: Latin America’s Environmental Concerns

#22 Why oil?◊ Money from selling oil is the

country’s main source of income.◊ Venezuelans are motivated to keep

producing, selling, and burning oil--and polluting.

Page 35: Latin America’s Environmental Concerns

#23 Solutions…◊ People are becoming aware that

the cost in the long term may be too great.

◊ Groups are calling for renewable energy sources and the clean-up and prevention of pollution.

Page 36: Latin America’s Environmental Concerns

What problem has been caused by oil production in Venezuela?A. About 15% of US oil comes from

VenezuelaB. The coast along the Caribbean

Sea has been polluted with oilC. Lake Maracaibo has become the

largest lake in South AmericaD. Venezuela is more polluted than

other South American countries

Page 37: Latin America’s Environmental Concerns

Why might the Venezuela government NOT want to stop oil production in the country, even though it causes a lot of pollution?A. The government gets about half of its

money from the oil business.B. The government does not care about

damage to the environment.C. People along Lake Maracaibo are now

protected by a dike to prevent flooding.D. People in Venezuela don’t care about

the environment as much as other people.

Page 38: Latin America’s Environmental Concerns

Who is affected first by carbon dioxide pollution?A. Healthy adultsB. Children and the elderlyC. Farmers along Lake MaracaiboD. Fisherman along the Caribbean

coast

Page 39: Latin America’s Environmental Concerns

Some scientists believe that increases in carbon dioxide contribute toA. Algal bloomB. Oil slicks on the Caribbean coastC. Global warmingD. Clear cutting