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secondary sources can reduce emissions.We can reduce Agriculture by decrease less burn  farm, fertilizer make from nitrogen. Also, we can reduce Fuel Combustion by use less motorbike. Finally, we can reduce Industry by decrease industry through fossil fuel combustion.

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In 1990, it decrease, but in 1993 the Nitrous oxide is go up to 450. 1996 is the most increase Nitrous Oxide but then it go down and down. Until,2004 is go up again and keep the same amount. In 2011, the Nitrous Oxide the in go low to 400 and then suddenly go up 450

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CH4 is the chemical
Formula of Methane

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N₂O is the Chemical Formula of Nitrous Oxide

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People alway mine coal, fossil fuel, and landfill so that then the gas from those will combine the chemical and turn to CH4. Nature soil and chemical can actually remove the CH4 away from the atmoshpere

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Methan on earth were decrease in 1990 between 2018 because there are not enough landfills, coal mining, and from  natural gas but the emissons was increase by all of this.

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We can reduce the emmissions is upgrading the equipment used to produce, store, and transport oil and natural to reduce the CH4

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CO² is the Chemical Formula of Carbon Dioxide.

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The Nitrous oxide cause by biomass burning. Human have cause 10% biomass.
People do such as agriculture, fuel combustion, wastewater management, and industrial processes to increase N₂O in the atmosphere. But in atmosphere they also have Nitrous oxide. SO if we increase N₂O we will also increase Nitrous oxide.

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The reason that makes carbon dioxide is the factories who burns things to make products such as electricity, transportation and industry.

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The amount of carbon dioxide being released in the USA increase about 5.8 percent between 1990 to 2018.

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Climate Change: Vital Signs of the Planet

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The Greenhouse Effect

Increasing Greenhouses Gases Are Warming the Planet

Scientists attribute the global warming trend observed since the mid-20 th century to the human expansion of the "greenhouse effect" ¹ - warming that results when the atmosphere traps heat radiating from Earth toward space.

Life on Earth depends on energy coming from the Sun. About half the light energy reaching Earth's atmosphere passes through the air and clouds to the surface, where it is absorbed and radiated in the form of infrared heat. About 90% of this heat is then absorbed by greenhouse gases and re-radiated, slowing heat loss to space.

Gases that Contribute

The Role of Humans

Human Activity Is the Cause of Increased Greenhouse Gas Concentrations

Over the last century, burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO ₂). This increase happens because the coal or oil burning process combines carbon with oxygen in the air to make CO ₂. To a lesser extent, clearing of land for agriculture, industry, and other human activities has increased concentrations of greenhouse gases.

How do we know what greenhouse gas and temperature levels were in the distant past?

Ice cores are scientists' best source for historical climate data. Other tools for learning about Earth's ancient atmosphere include growth rings in trees, which keep a rough record of each growing season's temperature, moisture and cloudiness going back about 2,000 years. Corals also form growth rings that provide information about temperature and nutrients in the tropical ocean. Other proxies, such as benthic cores, extend our knowledge of past climate back about a billion years.

detailed answer

The industrial activities that our modern civilization depends upon have raised atmospheric carbon dioxide levels by nearly 50% since 1750 ². This increase is due to human activities, because scientists can see a distinctive isotopic fingerprint in the atmosphere.

In its Sixth Assessment Report, the Intergovernmental Panel on Climate Change, composed of scientific experts from countries all over the world, concluded thatit is unequivocal that the increase of CO ₂, methane, and nitrous oxide in the atmosphere over the industrial era is the result of human activities and that human influence is the principal driver of many changes observed across the atmosphere, ocean, cryosphere and biosphere.

"Since systematic scientific assessments began in the 1970s, the influence of human activity on the warming of the climate system has evolved from theory to established fact."

- Intergovernmental Panel on Climate Change

The panel's AR6 Working Group I (WGI) Summary for Policymakers report is online at https://www.ipcc.ch/report/ar6/wg1/.

Is the Sun to Blame?

Evidence Shows That Current Global Warming Cannot Be Explained by Solar Irradiance

Scientists use a metric called Total Solar Irradiance (TSI) to measure the changes in energy the Earth receives from the Sun. TSI incorporates the 11-year solar cycle and solar flares/storms from the Sun's surface.

Studies show that solar variability has played a role in past climate changes. For example, a decrease in solar activity coupled with increased volcanic activity helped trigger the Little Ice Age.

The above graph compares global surface temperature changes (red line) and the Sun's energy that Earth receives (yellow line) in watts (units of energy) per square meter since 1880. The lighter/thinner lines show the yearly levels while the heavier/thicker lines show the 11-year average trends. Eleven-year averages are used to reduce the year-to-year natural noise in the data, making the underlying trends more obvious.

The amount of solar energy that Earth receives has followed the Sun's natural 11-year cycle of small ups and downs with no net increase since 1880. Over the same period, global temperature has risen markedly. It is therefore extremely unlikely that the Sun has caused the observed global temperature warming trend over the past half-century. Credit: NASA/JPL-Caltech

But several lines of evidence show that current global warming cannot be explained by changes in energy from the Sun:

Since 1750, the average amount of energy from the Sun either remained constant or decreased slightly³.

If a more active Sun caused the warming, scientists would expect warmer temperatures in all layers of the atmosphere. Instead, they have observed a cooling in the upper atmosphere and a warming at the surface and lower parts of the atmosphere. That's because greenhouse gases are slowing heat loss from the lower atmosphere.

Climate models that include solar irradiance changes can't reproduce the observed temperature trend over the past century or more without including a rise in greenhouse gases.
References
References

1. IPCC 6 th Assessment Report, WG1, Summary for Policy Makers, Sections A, " The Current State of the Climate "

IPCC 6 th Assessment Report, WG1, Technical Summary, Sections TS.1.2, TS.2.1 and TS.3.1

2. P. Friedlingstein, et al., 2022: "Global Carbon Budget 2022", Earth System Science Data ( 11 Nov 2022): 4811-4900. https://doi.org/10.5194/essd-14-4811-2022

3. IPCC 6 th Assessment Report, WG1, Chapter 2, Section 2.2.1, " Solar and Orbital Forcing"

IPCC 6 th Assessment Report, WG1, Chapter 7, Sections 7.3.4.4, 7.3.5.2, Figure 7.6, " Solar"

M. Lockwood and W.T. Ball, Placing limits on long-term variations in quiet-Sun irradiance and their contribution to total solar irradiance and solar radiative forcing of climate," Proceedings of the Royal Society A, 476, issue 2228 (24 June 2020): https://doi 10.1098/rspa.2020.0077

Header image credit: Pixabay/stevepb

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Vital Signs of the Planet: Global Climate Change and Global Warming. What is the "greenhouse effect"? What is causing it? Are humans to blame? What does solar irradiance have to do with it? Answers here.

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The best way to lessen CO₂ emissions is to decrease the amount of fossil fuels consumption. Ways to reduce CO₂ emissions are cross-cutting and apply to homes, businesses, industry, and transportation.

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Greenhouse gases: Causes, sources and environmental effects

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Greenhouse gases help keep the Earth at a habitable temperature - until there is too much of them.