world politics
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Transcript of world politics
Members Nguyễn Tấn Huy 1258023 Ngô Thị Xuân Uyên 1258092 Lê Hoàng Phương Anh 1 1258004 Huỳnh Thanh Nguyên 1258023 Phạm Hưng Thịnh 1258076
Introduction
Compare the pictures
Global Warming
Global Warming is a general
increase in world temperatures caused by increased amount of carbon dioxide around the Earth.
Air pollution
Air pollution The air in our
towns and cities is very polluted with gases, car fumes, smoke. It is becoming more and more difficult to breathe.
The destruction of the ozone layer
The destruction of the ozone layer
The ozone layer is damaged and it is very dangerous for our planet. The ozone layer is a layer of gases in the sky that prevents harmful radiation from the sun from reaching the Earth
Heavy traffic
Water pollution
Water pollution Water pollution occurs when harmful
substances are released into the water in large quantities which cause damage to people, wildlife, or habitat or indirectly into water bodies without proper treatment to remove harmful compounds.
Wastes
Effects of water pollution Water pollution is a major
problem in the global context. It has been suggested that it is the leading worldwide cause of deaths and diseases, and that it accounts for the deaths of more than 14,000 people daily.
An estimated 700 million Indians have no access to a proper toilet,and 1,000 Indian children die of diarrhea sickness every day.
Some 90% of China's cities suffer from some degree of water pollution, and nearly 500 million people lack access to safe drinking water.
Air Pollution1. Causes:Both human and natural actions
Natural events: forest fires volcanic eruptions wind erosion pollen dispersal natural radioactivity
Human activities that result in air pollution include: Emissions from industries and
manufacturing activities
Burning Fossil FuelsFumes from car exhaust contain dangerous gases such as carbon monoxide, oxides of nitrogen, hydrocarbons and particulates.
Household and Farming Chemicals
Crop dusting
Household cleaning products
Painting supplies
Over the counter insect/pest killers
Fertilizer dust
2. Effects
Human health
Animals and plants Acid rain The atmosphere as whole
Global warmingGlobal warming and climate change are terms for the observed century-scale rise in the average temperature of the Earth's climate system and its related effects.
2014 is the warmest year on record since 1880
The effects of global warming are the environmental and social changes caused (directly or indirectly) by human emissions of greenhouse gases.
Many impacts of climate change have already been observed:
Melting ice or glacier retreat
Changes in the timing of seasonal events
Changes in agricultural productivity
Industrialization Effect
Nuclear power
Effect of Fukushima disaster on the Environment
A large amount of radioactive cesium enters an ecosystem
Quickly becomes ubiquitous, contaminating water, soil, plants and animals
Produced the largest discharge of radioactive material into the ocean in history
Number of Nuclear power plants in the World
Deforestation
Effects Flood Lack of Oxygen => Green house effect Loss of species Soil Erosion
Amazon Deforestation
The area of Amazon rainforest cleared rose from 415,000 to 587,000 km2
Overfishing
Why is overfishing a problem?• No time for recovery• Fish populations collapsing • Supply limited
(Koster, 2007)
Data About Extent of Problem
Cause of Overfishing • mainly over-exploitation
(Jeantheau, 2005)
Impact on EnvironmentLow growth rates Changes in species composition & biodiversity Extreme changes to the ocean:
1. Degradation of reefs 2. Destruction to bottom grasses
Impact on Human Health• Prevents heart disease and strokes• Poverty countries depend on fish • Omega-3 fatty acids• Overfishing = all of the above gone
Japanese Whaling History Begun at 12h century On an industrial scale began around the
1890s During the 20th century, Japan was
heavily involved in commercial whaling International Whaling Commission
(IWC)
Overhunting
Woolly Mammoths
Polar Beers
Caspian Tigers
Number left in wild in 2012
Solution
Act on climate
Forego Fossil Fuels Consume Less Stop Cutting Down Trees One Child
Water crisis We rely on clean water to survive Dirty water is the world's biggest health
risk