What does global warming mean?


Global warming is the process by which the Earth’s average atmospheric temperature increases over time. The Earth has experienced both global warming and cooling during its 4.5-billion-year history. However, the current rate of temperature increase exceeds that which occurred in the past. Many scientists suspect that the accelerated rate of temperature increase is the result of human behavior.

The primary driving force behind global warming is the change in the chemical composition of the Earth’s atmosphere. By burning hydrocarbons, humans release elevated levels of carbon dioxide into the air. As the atmosphere’s carbon concentration goes up, the planet retains more of the heat from the sun. The process works similarly to the way a greenhouse does, which is why scientists refer to carbon dioxide as a “greenhouse gas.” Carbon dioxide is not the only greenhouse gas, but it is the most important one for humans to monitor. Methane, nitrous oxide and fluorinated gases also contribute to global warming.

Rising temperatures cause a variety of effects on the planet. While a few of these effects are beneficial, most are detrimental to the current balance of nature. For example, rising carbon dioxide levels may cause plants to grow more quickly, but the accompanying rise in temperature may cause the polar ice caps to melt, raising the global sea level.

Q&A Related to "What does global warming mean?"
If you've been wondering how to prevent global warming, you're not alone. People around the world are concerned with the negative impact human activity is having on out atmosphere
1. Research the phenomenon. Hunt down statistics that will help support your argument and be sure to cite sources. Misinformation and dubious claims cloud a great deal of this debate
1. Learn about global warming. Understanding global warming is important, especially with all of the conflicting information in the public dialog. Read books, articles and studies
Historically the US was the largest emitter of CO2 for many decades. Only during the past ten years did China finally eclipse us over all, though the US still emits more CO2 per person
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Ask.com Answer for: what does global warming mean
Climate Change And Human Health
Human societies over the ages have depleted natural resources and degraded their local environments. Populations have also modified their local climates by cutting down trees or building cities. It is now apparent that human activities are perturb More »
Source: healthline.com
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