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

Question

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?

(No trolls pls; Don't say we will go underground or Mars; This is a contemporary and outlook question)

Human population today : 6.7 billion

Rainforest : 7% of earth surface

Gains : Photosynthesis (land) - 165,000 ^10 kg O2 per year

Losses-Respiration and Decay : 230,000 ^10 kg O2 per year

On its current growth trajectory, by the year 2050 is expected to reach nearly...(assume other "factors" remain unchanged)

Answer 1

Don't believe everything you read.

When the early cars first came out people were saying it can't go faster than 25 mph.

Mathematically a bumbo bee isn't suppose to fly.

Even scientist said we can't travel faster than sound and live.

Things have a way of improving as time goes on.  It's called balance of nature, or survival of the fittest.

I predict the gasoline engine will be replaced by the "Worlds Cleanest Car" very soon.

"BBC News is reporting that a French company has developed a pollution-free car which runs on compressed air. India's Tata Motors has the car under production and it may be on sale in Europe and India by the end of the year.

The air car, also known as the Mini-CAT or City Cat, can be refueled in minutes from an air compressor at specially equipped gas stations and can go 200 km on a 1.5 euro fill-up -- roughly 125 miles for $3. The top speed will be almost 70 mph and the cost of the vehicle as low as $7000."

Have faith.

Answer 2

(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.

Answer 3

It is a matter of how many OTHER forests are left. while rain forests are 7% of theearths surface, there are many outher trees. Perhaps there would only be a decline of humans in the rainforest are. I'm pretty sure that,yes, if you do keep destroying forests, we will eventually run out of air, seing we exhale carbon dioxide, and then the trees breathe that in, and then exhale oxeygen, which we breath in, and the cycle continues. There could be an greater need for oxeygen, but there will be so few trees to produce it.