what objects emit more carbon dioxide??

Question

Give me a few places and things that realese carbon dioxiode?

How can u measure carbon dioxide?

Answer 1

fossil fuelled power stations
cars and aeroplanes
animals
volcanoes
domestic boilers

It can be measured I believe (although my memory is a bit rusty) by bubbling air through a carbonate solution and measuring the loss of volume. Also with devices called Drager tubes.

Answer 2

The heated policy debate about global warming often seems like a Rorschach test: If you're an environmentalist, you advocate quick and significant cuts in carbon-dioxide emissions to prevent the worst-case scenario, which includes more-violent storms, changes in the course of the Gulf Stream, melting of the polar ice sheets, and higher sea levels. If you represent an industry group, you argue against taking any action now, because cutting emissions is likely to be expensive, and the benefits are not clear. Unfortunately, neither of those positions is a prudent approach to the problem.

The reason we can't seem to get beyond the extreme viewpoints is that scientists are uncertain about just how serious the problem of climate change is. It would be far better to forsake simplistic antagonisms, admit our ignorance, and strive for a realistic policy that acknowledges the inherent uncertainties by mandating small, cost-effective steps to reduce global warming.

The basic mechanism behind global warming has been understood for more than 100 years. Energy from the sun, in the form of ultraviolet light, passes through the earth's atmosphere and is absorbed by objects—trees, buildings, animals, rocks, and so forth-on the ground. The objects later radiate some of the energy back into space, but as infrared rather than ultraviolet light. Some of the gases in the earth's atmosphere—including carbon dioxide, methane, chlorofluorocarbons, even water vapor-trap that infrared radiation, keeping it near the surface of the earth and thus raising global temperatures. Those gases have become known as "greenhouse gases," because they keep the earth warmer than it otherwise would be, much the same way that glass keeps a greenhouse warm.

The amount of greenhouse gases in the atmosphere determines how much energy can be trapped, and thus how much heating can occur. Concern about global warming stems from the fact that the concentrations of many greenhouse gases have been increasing sharply. In particular, the use of fossil fuels has raised the level of carbon dioxide in the atmosphere by about 25 per cent since the Industrial Revolution.

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