This document outlines 12 major environmental issues: global warming, pollution, overpopulation, loss of biodiversity, natural resource depletion, ocean acidification, deforestation, ozone layer depletion, acid rain, urban sprawl, public health issues, and genetic engineering. It provides details on the causes and impacts of each issue, noting for example that global warming is caused by greenhouse gas emissions and threatens human survival, while pollution stems from industry, vehicles, and toxins and takes millions of years to undo. Overall the document presents a comprehensive overview of the most pressing environmental concerns facing the world today.

1. MOST IMPORTANT
ENVIRONMENTAL ISSUES
POOJA BOROLE (7)
RUDRAKSH JOSHI (17)
DURGESH MISHRA (27)
TARUN RAISINGHANI (37)
SHIVANI HASIJA (47)
VIBIN JACOB (57)

3. 1. GLOBAL WARMING
 Global warming is result of
human practices like emission of
green house gases such as
carbon dioxide &methane etc.
 It leads to rising temperatures
of oceans & earth surfaces
 Causing melting of polar ice-caps,
rise in sea levels, flash
floods, excessive snow or
desertification

4. CONTINUE…
 Global warming is threatening
the survival of human race.

5. 2.POLLUTION
 Pollution of air, water & soil
requires millions of years to
recoup.
 Industry & motor vehicle exhaust
are the number one pollutant.
 Heavy metals ,nitrates&
plastic are toxins responsible
for pollution.
 Water pollution is caused by
oil spill, acid rain &urban
runoff etc.

6. CONTINUE…..
 Air pollution is caused by
various gases & toxins
released by factories &
combustion of fossil fuels.
 Soil pollution is majorly
caused by industrial waste that
deprives soil from essential
nutrients.
 Noise pollution is mainly
caused by motor vehicles.

7. 3.OVERPOPULATION
 Overpopulation is one of the
crucial current environment
problem.
 The population of the planet is
reaching unsustainable levels as it
faces shortage of resources like
water, fuel & food.
 Population explosion in countries
like India is training the already
scarce resources.

8. CONTINUE….
 Intensive agriculture practiced
to produce food damages the
environment through use of
chemical fertizers, pesticides &
insecticides.

10. 4.LOSS OF BIODIVERSITY
 Human activity is leading to the
extinction of species & habitats &
loss of biodiversity.
 Ecosystem ,which took millions of
years to perfect, are in danger when
any species population is decimating.
 Balance of natural processes like
pollination is crucial to the survival of
the eco-system & human activity
threatens the same.

11. CONTINUE….
 Destruction of coral reefs
in the various oceans,
which support the rich
marine life.

13. 5. NATURAL RESOURCES DEPLETION
 It is another crucial current
environmental issue.
 Fossil fuel consumption results
in emission of greenhouse
gases, which is responsible for
global warming & climate
change.

14. CONTINUE….
 Globally, people are taking
efforts to shift to renewable
sources of energy like solar,
wind, biogas & geothermal
energy.

15. 6.OCEAN ACIDIFICATION
 It is a direct impact of
excessive production of
carbon dioxide.
 25% of co2 produced by
humans.
 Ocean acidification has
increased by the last 250
yrs but by 2100, it may
shoot up by 150%.

16. CONTINUE….
 The main impact is on
shellfish & plankton in the
same way as human
osteoporosis.

17. 7.DEFORESTATION
 Our forests are the natural
sinks of co2 & produce fresh
o2 as well as helps in
regulating temperature.
 Deforestation simply means
clearing of green cover &
make the land available for
residential, industrial or
commercial purposes.

18. CONTINUE…
 At present forests cover 30% of the land but every year
tree cover is lost amount to country of
panama.

19. 8.OZONE LAYER DEPLETION
 Ozone layer is an invisible
Layer of protection around
the planet thus protecting
Us from UV rays.
 Depletion caused due to
Pollution caused by chlorine &
bromine found in cloro-floro
Carbons(cfc’s)

20. CONTINUE…
 Cfc causes hole in ozone layer, the
biggest is above arctic.
 Cfc are banned in many industries
& consumer products.

21. 9.ACID RAINING
 Acid rain can be caused due to
combustion of fossil fuels or
erupting volcanoes or rotting
vegetation which release sulfur
dioxide & nitrogen oxide into the
atmosphere.
 It causes serious effect on
human health, wildlife &
aquatic species.

22. 10.URBAN SPRAWL
 Urban sprawl refers to migration of
population from high density areas
to low density rural areas resulting
in spreading of city over more&
more rural land.
 It results in land degradation,
increased traffic, environment
issues & health issues.

23. 11.PUBLIC HEALTH ISSUES
 The current environment
problems pose a lot of risk to
health of humans & animals.
 Dirty water is the biggest
health risk of the world.
 Run-off to rivers carries along
toxins, chemicals & disease
carrying organism.

24. CONTINUE….
 Pollutants causes
respiratory diseases like
asthma & cardiovascular
problems.
 High temperature
encourage the spread of
infectious diseases like
dengue.

25. 12.GENETIC ENGINEERING
 Genetic modification of food using
biotechnology is called genetic engineering.
 Genetic modification of food results in
increased toxins and diseases as genes from
an allergic plant can transfer to target plant.
 Genetically modified crops can cause serious
environmental problems as an engineered
gene may prove toxic to wildlife.
 Another drawback is that increased use of
toxins to make insect resistant plant can cause
resultant organisms to become resistant to
antibiotics.