Too much global temperatures rise (as they are doing now), too little global temperatures fall (possibly causing an ice age), exactly the right amount global temperatures hold constant.
We had "exactly the right amount" from the end of the last ice age (about 10000 BCE) until the industrial revolution (early 1800s). This made life ideal for the development of agriculture and early civilization. The current rising levels may bring that to an end.
The greenhouse gases contribute to the greenhouse effect. Greenhouse gases are inescapable.
The greenhouse gases reflect to the Earth the infrared radiation.
Oxygen is not a greenhouse gas. It deceases the greenhouse gases.
Greenhouse gases capture heat in the greenhouse effect. If the amount of gas increases then it causes global warming.
Humans produce greenhouse gases in many ways. Operating a generator or cooking with gas both will produce greenhouses gases. However, riding a bicycle will not.
If the amount of greenhouse gases were reduced, then the temperature of the earth would cool.
Chlorofluorocarbons (CFCs) are the newest of the greenhouse gases
The earth requires a certain amount of greehouse gases.
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The greenhouse gases contribute to the greenhouse effect. Greenhouse gases are inescapable.
The greenhouse gases reflect to the Earth the infrared radiation.
Neither type release greenhouse gasses
The answer will depend on what aspect of the greenhouse effect you wish to show. The pie could represent the mass of greenhouse gases in the atmosphere, or their volumes, or the amount of temperature change that can be attributed to each of the gases.
nuclear
A decrease in the amount of greenhouse gases in Earth's atmosphere would result in Cooler global temperatures. This would help decrease the impact of global warming.
Greenhouse gases capture heat in the greenhouse effect. If the amount of gas increases then it causes global warming.
Oxygen is not a greenhouse gas. It deceases the greenhouse gases.