The Earth has many problems because of man
this is undeniable ,how much we are responsible for Global warming is debateble ,But there is a definate change in Global temperatures that is affecting nature in a bad way.
this text only covers some aspects of Climate change ,mainly agriculture i.e.effects of deforestation and subsequent man made desertification
water and air polution such as caused by
industrial contamination ,the contaminating effects of the cities(the internal combustion engine) ,are other stories,
and all of these are also man made ,such as the high industrial chimneys pumping contamination into the clouds and the burning of tires,some of this polution has been found in the ice in the polar regions
there are natural cycles in the planets life
but a lot is influenced by mans existance ,and this is increasing with overpopulation,putting strains on Natural resources and increasing contaminations as well as destructions of essential componants the ensure living conditions for all life forms
climate change is caused in great parts by desertification ,and most desertification is caused by man
the thinner ozone layer helps to speed this up.and this is caused mainly by air polution ,also as a result of mans actions
in North Africa,India,Mexico ,millions of people are effected by land loss and desertification and some have died as a result,
And now many animals are becoming sick because of changes in temperature ,
vital links in the food chains are disapearing affecting other species further along in the chain
90% of the feral (wild) bee population in the United States has died out.
In the Netherlands bee diversity is down 80 percent in the sites researched, and that "bee species are declining or have become extinct in Britain."
wildflowers that depend on pollination have dropped by 70 percent
we are witness to a mass exstinction ,for the first time since the dinosaurs, of the earth's estimated 10 million species, 300,000 have vanished in the past 50 years. each years, 3,000 to 30,000 species become extinct.
everything is happening so fast it is not possible to monitor things any more.
,the Sahara is growing by 7 kilometers a year
and most of the desserts we know are a results of mans actions ,and they are increasing ,not getting less ,in the dinosaurs days ,there were few desserts.
collectively this planet is drying up ,
each degree rise in temperature means 10%crop loss
and there is less and less water (because of deforestation),to irrigate this production ,
and there are less and less farmers to do it..
Arable lands and their farms are lost all over the globe. Many farmers sons abandon farming and head for the cities.
Northern China is drying up, what once were millions of food producing people, are now hungry refugees ,running for their lives from the all consuming dust storms.
This will have a great effect on world food prices when they start buying at what ever cost, to feed their people.
The farmers that are left have to feed some 70 million more people than the year before but with less topsoil.
Over the last half century,
Population growth & rising incomes have tripled world grain demand from 640 million tons to 1,855 million
In the near future the global farming community will not be able to feed every body ,food prices will continue to rise. .
RISING SEAS
The northpole is melting ,and we will know it without ice in our life times.
this does not affect the sea level because it is ice that is already in the water.but the melting ice from Green land and the south pole ,are another matter
Global warming could be slowed down to some extent,but it will mean global co operation between all countries ,and taking into account human nature and the world politics ,it is unlikely that this will happen,
At least not untill we are all in the middle of planetary disastres and it becomes a battle for the survival of humanity every where,instead of just some third world countries Source(s) here are a 100 ways to help
http://www.eco-gaia.net/forum-pt/index.p...
http://www.greenpeace.org/international/...
http://news.bbc.co.uk/2/hi/science/natur... Source(s) (s) Lester E Brown is the director and founder of the global institute of Environment in the United states .he has compiled a report based on all the satalite information available from NASA,and all the information that has
come from Universities and American embassies WORLD WIDE ,
his little book--a planet under stress , Plan B has been trans lated into many languages and won the best book award in 2003