Post on 15-Jul-2015
Contents
• Introduction
• Global Warming
• Ozone layer depletion
• Extinction of birds
• Extinction of animals
• Protect environment
• Water and Forests
• Conservation of environment
INTRODUCTION
There was a time when people thought of the environment, they thought of its beauty; but now as the natural beauty of the earth that disappears, many people around the world have awoken to the realities of just how fragile our earth actually is. Central to this issue is pollution, which involves the introduction of harmful substances into the air, land, and water. Although pollution has been occurring throughout the earth’s history, the rate by which the human species have contributed to the amount of pollution that has entered our environment over the past several hundred years far exceeds the earth’s inherent ability to heal itself.
Along with pollution, the mass deforestation of the world’s old growth forests has also posed a growing problem to the health of our environment. The clearance of forests without sufficient reforestation has gradually wore down nature’s natural defense against air pollution, desertification, and soil nutrient loss to the point that we are now facing a future world without trees, which would ultimately mean a world without people.
• The global issue of the Environment encompasses many diverse matters of interest some of which will be discussed throughout this environment presentation, which include: global warming, ozone depletion, Extinction of plant and animal species. But it is also important to take measures to avoid the danger of mass devastation which will also be discussed in this ppt.
OZONE LAYER
DEPLETION
Why the hole in the atmospheric ozone layer above us?
What has been done about this?Why should I worry ourselves about the
Ozone Layer Depletion?
Good life at the beach threatened?
Mr. OZONE: Will I be able to continue enjoying this life without problems?
What is Ozone? Ozone Layer?
CFC’s and ozone depletion
Global CFC production
Ozone hole measurements over the Antarctic region 1980-98
Effects of UV rays on Aquatic Ecosystems
Effects of UV rays on Terrestrial Ecosystems
Damage to
plant cell DNA
molecules -
makes plants
more susceptible
to pathogens
and pests
Reductions in photosynthetic capacity in the
plant - results in slower growth and
smaller leaves
Causes mutations in
mammalian cells and destroys membranes
Harmful effects of UV rays on people
Skin cancer
Premature aging
(photoaging) of the skin
(different from normal)
chronological aging
Cataracts and eye
disorders (corneal
sunburn and
blindness)
Immune system damage
MEASURES TO BE TAKEN
GREENHOUSE EFFECT
DEFORESTATION HAS LED TO A DRASTIC INCREASE IN CO2 LEVELS.
WATER IS THE MOST
PRECIOUS COMMODITY ON
THE EARTH.IT HAS MADE
HUMAN LIFE POSSIBLE ON
THE EARTH.IT IS USED FOR
VARIOUS PURPOSES ACROS
THE GLOBE.HUMAN
LIFE,FLORA AND FAUNA ALL
CHERISH UNDER ITS EFFECT.
Nowadays especially in our country
people have no value of water or the are
not aware of the importance of water .
People are throwing garbage in rivers,
lakes etc .They are using water very
irresponsibly they don’t care about their
future. This of course makes the river
dirty.
Causes of pollution of water.
FORESTS ARE LARGE GROUPS OF TREES .IN WHICH
HABITANTS ARE LARGE VARIETY OF ANIMALS RANGING FROM SMALL RATS TO MASSIVE BODIED ELEPHANT .FORESTS
PROVIDE US WITH TIMBER,MEDICINES ETC. HENCE THEY ARE VERY ESSENTIAL TO US.
But now a days people are cutting these
beautiful forests for their greed of land.
This leads to deforestation.
Deforestation not only reduces the green
cover but also reduces the concentration
of oxygen in the air .With out forests
the earth would become an easy prey for
global warming which could kill all of
us.
DEFORESTATION
EFFECTS OF DEFORESTATION
• The Scarlet Macaw is found in the treetops from Mexico to southern Brazil. It is about 90 centimetres in length and is bright red with blue and yellow wings, blue and red tail which is a unique feature in the family and a white face with big, sickle-shaped beaks. Its feet are able to grasp the limbs of a tree very firmly. When a Macaw is fully developed, the tail is more than two feet long.
• WHY ARE MACAWS ENDANGERED ?
• BECAUSE THE FEMALE WILL NOT LAY ANOTHER GROUPS OF EGG UNTIL THE FIRST GROUP IS INDEPENDENT .THIS MEANS THAT THE POPULATION DOES NOT GROW QUICKLY.
• THIS IS A BIG PROBLEM BECAUSE THESE ARE OFTEN KILLED OR CAPTURED BY HUMANS AS PETS .
• Koalas are found in the coastal regions of Eastern Australia. It is a
marsupial mammal. It is endangered because-
KOALA
GIANT PANDA (ASIA)
Pandas are dying out mainly because of one main reason: habitat loss. Their main source of food is
bamboo, which takes a long time to grow. Hence, when a forest of bamboo was being
consumed by them they could simply move to another bamboo forest, but as the forests have been cut down the Pandas are experiencing
shortage of food.Wild pandas have been reported to die because of starvation simply because they cannot reach the next bamboo forest quickly enough, or at
all. Habitat fragmentation affects their feeding, and mating as well, anytime the Panda
has to leave their territory, they are at risk
ABOUT
• The White rhinoceros is one of the largest Northern subspecies ever to be described by scientists. This subspecies was classified in 1908. Today, it is very close to extinction in the wild, and few have ever been brought into captivity .
WHY IS RHINO ENDANGERED ?
• Rhinos are endangered because people have been hunting them for many of years. Poaching them just to sell their horns. They actually call the Black Rhinos' horn "black gold" because its so expensive....
The tiger is a member of felidae (cat) family. It’s length is mostly 3.3 meters and weight is 300 kg . Tigers have a lifespan of 10–15 years in the wild, but can live longer than 20 years in captivity.
• 1 .The preservation and enhancement of wildlife and its habitat cannot be distinguished from preservation of human habitat and so is a core function of government.
2 .Effective habitat conservation requires the
participation of all levels of government State and federal
agencies should establish baseline data and protection
criteria as well as provide technical assistance to local
governments and landowners.
!!! IF YOU WILL NOT CONSERVE THESE ENDANGERED SPECIES THEN THESE ALL WILL COME INTO THE CATEGORY OF EXTINCT ONE .
Project Tiger
Project Tiger is a wildlife conservation movement initiated in India in 1973 to protect tigers. The project aims at tiger conservation in specially constituted tiger reservesrepresentative of various regions throughout India and strives to maintain viable populations of Bengal tigers in their natural environment.
CONSERVATION OF ENVIRONMENT
Polythene is the threat to environment it can’t be burnt it can’t be thrown in water and it can’t be eaten we can’t dispose of in any area if we dispose it in water than it causes water pollution if we burn it then release harmfull gases and if swallowed by cows than it causes death
India should promote the use of solar energy through solar photovoltaic and thermal systems for power generations. Also integrate other renewable energy technologies like biomass and wind.
SAVE PETROL• Our bus stop is not miles away. Will it not be
good to exercise while reaching bus stop rather than using a transport uses petrol or diesel ? Wasting petrol for just walk able
distance is not wise ;
rather it is stupidity.
Save trees ,stop
pollution…………..
• The most important motto in a person’s life should be about planting trees. Trees not only add to scenic beauty but they are also very useful. We should not cut them down, we should rather grow more of them.
Save electricity
• Today is today ,tomorrow never comes save electrcity today to generate it tommorow.weshould never forget to switch off the ligjhtsand fans .
This saves electricity.if we utilize electricity,it can be provided to the places
where it does not reach.
it should be our motto to
Check that nobody waste it.
No Smoking in public
places………..
• Our other motto should be about smoking. Smoking can be harmful so,we should not smoke, due to smoking pollution is inc. in environment.
• NATURE HAS GIVEN US WONDERFUL GIFTS.BEING YOUNGER GENERATION,WE SHOUL LOOK AFTER THEESE GIFTS.THEREFORE,START PLAYING THE ROLE OF SAVIOUR OF ENVIRNOMENT.
GOOD LUCK!
Introduction Jatin Gupta
Global Warming Kriti Rastogi