Human impact on the oxygen cycle?

Do Overpopulation of HUMAN and devastation of RAINFOREST impact on Natural Oxygen Cycle?

• http://chimge.unil.ch/En/redox/1red33.htm I was told that if the world is cramped with human and total-destruction of rain-forest, may end the human race. How far it could be true? ...show more

• Answer:

  (I copied & pasted from previous posting) What do you mean? If you say human is major culprit in devastation that is true. Did you know that rainforests covers 7% of the earth's surface yet they contain only of the animal species in the world? Today’s population (approx) --------------------------------------... Human : 6.7 billion ***LIVESTOCK : 30 billion*** Rainforest : 7% 2050’s population (approx) --------------------------------------... Human : 9 billion ***LIVESTOCK : 40 billion*** (a man to 4 livestock ratio) Rainforest : 0% Therefore being a typical end-user it awful to believe that livestock invaded major segment of oxygen, land, wealth and resources than human; Livestock now use 30 percent of the earth's entire land surface, mostly permanent pasture but also including 33 percent of the global arable land used to producing feed for livestock, while inhabit larger land space than human. Of course human are the culprit in propagating the livestock and ruin the world for his desire. The livestock business is among the most damaging sectors to the earth's increasingly scarce water resources, contributing among other things to water pollution, euthropication and the degeneration of coral reefs. The major polluting agents are animal wastes, antibiotics and hormones, chemicals from tanneries, fertilizers and the pesticides used to spray feed crops. Widespread overgrazing disturbs water cycles, reducing replenishment of above and below ground water resources. Significant amounts of water are withdrawn for the production of feed. Most people assume that global warming is caused by burning oil and gas. But in fact between 25 and 30 percent of the greenhouse gases released into the atmosphere each year -- 1.6 billion tonnes -- is caused by deforestation. ... the livestock sector accounts for 9 percent of CO2 deriving from human-related activities, but produces a much larger share of even more harmful greenhouse gases. It generates 65 percent of human-related nitrous oxide, which has 296 times the Global Warming Potential (GWP) of CO2. Most of this comes from manure. If the present rate of increase continues, carbon dioxide concentrations in the atmosphere will increase to about 700 parts per million by 2100. So simple is that! It’s bullshit if someone troll that human CAUSE NO AFFECT ON GLOBAL WARMING therefore no consent in saving the LAST TREE. Assume the world reached acute shortage for oxygen, land space and resources, we have no other choice than giving up livestock; while human eat each others for survival. A win-win situation! Unless everyone turned to be VEGETARIANS – an impossible thing to happen by today.