why are cows harmful to the ozone layer?

Answer 1

when they fart!....it realses methane into the air...so if u have a field of cows....i recommand not getting to close if the had some beans >.<

Answer 2

Cows produce a lot of methane gas.

Is it true that cow, sheep, and termite flatulence does more damage to the ozone layer than fluorocarbons? How much damage do human farts do? --Mojo, Washington, D.C.

Cecil replies:

Couple issues we need to deal with here, Moe. The first is your imperfect grasp of the threats to the earth's atmosphere. While it's true that gas of, uh, biological origin may be a problem, the concern isn't the ozone layer (which is being damaged by chlorofluorocarbons, or CFCs) but rather the greenhouse effect, which causes global warming.

Some newspaper reporters aren't quite getting it either. You were no doubt moved to write by a story in the Washington Post headlined "Feed, Animal Flatulence and Atmosphere." It described the work of one Donald Johnson, an animal-nutrition specialist at Colorado State University, who supposedly has been studying cow flatulence. According to the story, animal flatulence "contributes in a large way to the potentially catastrophic warming of the globe, the 'greenhouse effect.'" Each cow emits 200 to 400 quarts of methane gas per day, or 50 million metric tons per year.

Just one little problem. Cows don't emit 400 quarts of flatulence a day. According to Professor Johnson, they emit 400 quarts' worth of burps, known in polite circles as eructation. The Post, in other words, doesn't know one end of a cow from the other! And this is the paper that broke Watergate--although, to be fair, I don't suppose they assign their top reportorial resources to the cow burp beat.

Details aside, animal methane does present a definite threat to the biota. It's believed 18 percent of the greenhouse effect is caused by methane, putting it second on the list of offending gases behind carbon dioxide. Methane breaks down in the atmosphere to form carbon dioxide, ozone, and water, all of which absorb heat. The temperature of the atmosphere rises, the ice caps melt, and next thing you know you're pumping the Atlantic Ocean out of your basement.
There are several major sources of methane: rice paddies (methane-producing bacteria thrive in the underwater environment), swamps and wetlands (ditto), mining and oil drilling, landfills, termites (although there's still some controversy on this one), "biomass burning" (notably in the Amazon rain forest), and animals. Ninety percent of animal methane is produced by ruminants (i.e., cud-chewers). These include sheep, goats, camels, water buffalo, and so on, but most of all cattle, of which the world has an estimated 1.2 billion.

Ruminants eat hay and grass and stuff containing cellulose, which can be digested only by special microbes that, to minimize commuting problems, live in the ruminants' guts. Unfortunately, the microbes tend to make a mess, and about 6 or 7 percent of what they eat winds up as methane. Thus the problem.

Now, you're probably saying, what the hey, cows have been around forever, how come all of a sudden they're a threat? All we know is this: atmospheric methane has been increasing at the alarming rate of 1 percent a year, and something's got to be causing it. The world cattle population is thought to have increased in the last decade, and Lord knows the Brazilians don't feel like taking any more heat for torching the Amazon. So hey, let's blame the cows.

Is there hope? Professor Johnson thinks a timely application of antibiotics in cattle feed could retard the microbes' methane production. But by and large antibiotics are already in use in the U.S., while in many third-world countries cattle forage out in the fields, making antibiotics difficult to administer.

In other words, we've got still another largely insoluble problem that threatens to end life as we know it. Sometimes I wish one of these looming disasters would go ahead and happen, just to end the suspense.

--CECIL ADAMS

Answer 3

As far as I know, they aren't. Cows do release methane, which is not a gas that's harmful to ozone. Methane is a greenhouse gas. The greenhouse effect and ozone layer are unrelated. It's CFCs that damage the ozone layer. Cows don't have aerosol farts.

Answer 4

yes cows are harmful to the ozone layer. when they flatulate (pass gas) they realease methane gas which is a natural gas but still harmful. Well the gas goes up and into the air herting the ozone layer.

Answer 5

When cows poo or fart, they release methane gasses. The stench combined with the fact that the poo is going to decompose after a while and become an eternal part of the Earth is very methane-ey. That is why they are helping cause climate change/global warming.

-Liz

Answer 6

Livestock such as cows, sheep, goats, camels, buffaloes, and termites release methane as well. Bacteria in the gut of the animal break down food and convert some of it to methane. When these animals belch, methane is released. In one day, a cow can emit ½ pound of methane into the air.

Answer 7

I'm not sure that they are.

I know they contribute to global warming because the fermentation in their guts releases methane - a potent greenhouse gas.

Clearing out vast areas of rainforest for cattle pasture has a double whammy of not only removing a carbon sink (the trees and plants) but introducing huge numbers of methane producers.

Answer 8

cows are harmfull to the soil,their flat feet and their weight brings the salt to the surface and turns grasslands into desserts with over grazing ,

desertification or lack of bio mass is harmfull to the ozone layer

Answer 9

That's a myth which is untrue. Remember the millions of Buffalo. They farted and dumped poop more than the cows do now

Answer 10

methane produced from gas they produce at both ends, cattle across the world leave a bigger carbon footprint than the worlds airlines