A Presentation on Global Warming:
Prepared By
Nidhi Goyal

INTRODUCTION
What is global warming-
.Global warming is the rise in the average temperature of Earth's
atmosphere and oceans since the late 19th century, and its projected
continuation.
. Since the early 20th century, Earth's mean surface temperature has
increased by about 0.8 °C (1.4 °F), with about two-thirds of the increase
occurring since 1980.
.Warming of the climate system is unequivocal, and scientists are more than
90% certain that it is primarily caused by increasing concentrations of
greenhouse gases produced by human activities such as deforestation and
the burning of fossil fuels.
. These findings are recognized by the national science academies of all
major industrialized nations.

CAUSES OF GLOBAL WARMING
Causes of global warming
• Carbon dioxide emissions from fossil fuel
burning power plants
• Carbon dioxide emissions from burning gasoline
for transportation
• Methane emissions from animals, agriculture
such as rice paddies, and from Arctic seabeds
• Deforestation, especially tropical forests for
wood, pulp, and farmland
• Increase in usage of chemical fertilizers on
croplands

EFFECTS OF GLOBAL WARMING
. Rise in sea levels worldwide
• More killer storms
• Massive crop failures
• Widespread extinction of species
• Disappearance of coral reefs
.Various diseases due to Ebola, hanta and
machupo virus are expected due to warmer
climates.

PROBLEMS FACED
We are all personally responsible
for releasing carbon dioxide into
the atmosphere by burning fossil
fuels for transportation
(driving and flying) and home
energy (electricity, heating, and
cooling).
This leads to global warming, which is
destroying Earth's biodiversity and
native ecosystems.

SOLUTIONS
• Reduce your use of fossil fuels
• Protect native forests as "carbon storehouses"
• Help plant native trees in urban and deforested areas
• Volunteer for NWP
• Donate to NWP. Based on NWP total program costs and
conservation project accomplishments since 1999, every $10
donation allows us to sponsor one Apprentice Ecologist and
plant 3.1 native trees.

Benefits of planting native trees
• They help stop global warming by reducing
greenhouse gases
• They reduce soil erosion and water
pollution
• They provide habitat for native wildlife
(including songbirds)
• They improve human health by producing
oxygen and improving air quality
• They reduce home energy needs by
providing shade in summer and a
windbreak in winter
• Facts about the benefits provided by
planting one tree

• Absorbs over a ton of harmful
greenhouse gases over its lifetime
• Produces enough oxygen for four
people every day
• Provides the equivalent cooling
effect of ten room-size air
conditioners operating 20 hours a
day
• Provides an estimated $273 of
environmental benefits in every
year of its life

CONCLUSIONS
• SOLAR PANELS Can Help Fight Global
Warming
• Many efforts are being made by
various nations to cut down the rate of
global warming. One such effort is the
Kyoto agreement that has been
made between various nations to
reduce the emissions of various green
house gases.
• Also many non profit organizations
are working for the cause. Example :-
Green Yatra.

CONCLUSIONS
• But an interesting side of the global warming episode is that there
are people who do not consider global warming as something that
is creating a problem. Skeptics of global warming think that global
warming is not an ecological trouble. According to them earth's
coastlines and polar ice caps are not at a risk of vanishing. Global
warming skeptics consider that the weather models used to
establish global warming and to forecast its impacts are distorted.
Most of the global warming skeptics believe that the global
warming is not actually occurring. They stress on the fact the
climatic conditions vary because of volcanism, the obliquity cycle,
changes in solar output, and internal variability. The variations are
also a result of cosmic ray flux that is modulated by the solar
magnetic cycles.