2. Content
■ Introduction
■ What is global warming?
■ Causes of global warming
■ Green house effect
■ Impacts of global warming
■ Effect on the lives of human beings
■ Prevention of global warming
3. Introduction
Global warming refers to the long-
term increase in Earth’s average
surface temperature due to human
activities.
It is a significant environmental
issue with far-reaching
consequences.
4. What is global
warming?
Global warming is primarily caused by the greenhouse
effect.
Global warming refers to the Earth’s temperature getting
hotter over time. This happens because certain gases in the
air, called greenhouse gases, trap heat from the sun and
prevent it from escaping back into space. The main cause of
global warming is the release of greenhouse gases into the
atmosphere from human activities, especially when we burn
fossil fuels like coal, oil, and gas for energy.
5.
6. Causes of global
warming
Burning fossil
fuels: The
combustion of
coal, oil, and
natural gas for
energy
production
releases carbon
dioxide (CO2), a
7. Deforestation: The cutting
down of trees reduces the
Earth’s capacity to absorb CO2,
leading to higher CO2 levels in
the atmosphere.
Industrial activities: Industrial
processes, including cement
production and chemical
manufacturing, release
greenhouse gases like CO2,
methane (CH4), and nitrous
8. Greenhouse Effect and
Climate Change
The greenhouse effect is the process by
which certain gases in the Earth’s
atmosphere trap heat, leading to a
warming effect.
Human-induced greenhouse gas
emissions intensify the greenhouse
effect, causing climate change and
9. Impacts of Global
Warming
Rising global temperatures
result in various impacts:
Heatwaves and extreme
temperature events become
more frequent and intense.
Melting ice caps and glaciers
lead to rising sea levels,
threatening coastal areas.
10. Increased frequency and intensity of storms,
hurricanes, and floods.
Disruption of ecosystems and loss of biodiversity.
Negative effects on human health, including heat-
related illnesses and the spread of diseases.
11. Effect on the lives of human
beings
Rising Temperatures and Heatwaves
Global warming leads to rising temperatures and increased
frequency and intensity of heatwaves. Heatwaves pose health
risks, including heat exhaustion, heatstroke, respiratory issues,
and cardiovascular problems.
Changes in Precipitation Patterns
Global warming affects precipitation patterns, leading to
changes in rainfall distribution.
Some regions may experience more intense rainfall, leading
to an increased risk of floods, while others may face water
scarcity due to decreased rainfall.
12. Extreme Weather Events
Global warming contributes to more frequent and severe
extreme weather events, such as storms, hurricanes, and
wildfires.
These events can cause property damage, infrastructure
destruction, loss of lives, and displacement of communities.
Impact on Public Health
Heatwaves and increased temperatures increase the risk of
heat-related illnesses and deaths.
Changing climatic conditions can affect the geographic
distribution and prevalence of infectious diseases.
Poor air quality due to pollution worsens respiratory problems
13. Food and Water Security
Global warming affects agriculture, leading to changes in
crop yields, distribution patterns, and food production.
Water resources are impacted by changing precipitation
patterns, droughts, and increased evaporation, affecting
access to safe drinking water.
Displacement and Migration
Global warming contributes to human displacement and
migration due to environmental factors.
Rising sea levels, extreme weather events, and loss of
habitable land drive climate-induced migration.
14. Prevention of global
warming
To prevent global warming:
1.Transition to clean and renewable energy sources.
2.Improve energy efficiency.
3.Reduce deforestation and promote reforestation.
4.Promote sustainable agriculture and land use.
5.Minimize industrial emissions.
6.Enhance waste management.
7.Support sustainable consumption and lifestyles.
8.Back international agreements and policies.
9.Raise awareness and education.
