Question

about global warming at least 20 pages.
please correct answer​

Answer 1

Answer:

Global warming, the gradual heating of Earth's surface, oceans and atmosphere, is caused by human activity, primarily the burning of fossil fuels that pump carbon dioxide (CO2), methane and other greenhouse gases into the atmosphere. ... Already, global warming is having a measurable effect on the planet.

Answer 2

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Glaciers are melting, sea levels are rising, cloud forests are dying, and wildlife is scrambling to keep pace. It has become clear that humans have caused most of the past century's warming by releasing heat-trapping gases as we power our modern lives. Called greenhouse gases, their levels are higher now than at any time in the last 800,000 years.

We often call the result global warming, but it is causing a set of changes to the Earth's climate, or long-term weather patterns, that varies from place to place. While many people think of global warming and climate change as synonyms, scientists use “climate change” when describing the complex shifts now affecting our planet’s weather and climate systems—in part because some areas actually get cooler in the short term .

According to the National Oceanic and Atmospheric Administration (NOAA): Between 1880 and 1980, the global annual temperature increased at a rate of 0.13°F (0.07°C) per decade, on average. Since 1981, the rate of increase has sped up, to 0.32°F (0.18°C) per decade. This has led to an overall 3.6°F (2°C) increase in global average temperature today compared to the preindustrial era. In 2019, the average global temperature over land and ocean was 1.75°F (0.95°C) above the 20th-century average. That made 2019 the second hottest year on record, trailing only 2016.

This rise in heat is caused by humans. The burning of fossil fuels has released greenhouse gases into the atmosphere, which trap warmth from the sun and drive up surface and air temperatures.

☆ How the greenhouse

How the greenhouse effect plays a role

The main driver of today's warming is the combustion of fossil fuels. These hydrocarbons heat up the planet via the greenhouse effect, which is caused by the interaction between Earth's atmosphere and incoming radiation from the sun.

Gases in the atmosphere trap this heat, preventing it from escaping into the void of space (good news for life on the planet). In a paper presented in 1895, Arrhenius figured out that greenhouse gases such as carbon dioxide could trap heat close to the Earth's surface, and that small changes in the amount of those gases could make a big difference in how much heat was trapped.

☆ Effects of global warming

Global warming doesn't just mean warming, which is why "climate change" has become the favored term among researchers and policymakers. While the globe is becoming hotter on average, this temperature increase can have paradoxical effects, such as more frequent and severe snowstorms. Climate change can and will affect the globe in several big ways: by melting ice, by drying out already-arid areas, by causing weather extremes and by disrupting the delicate balance of the oceans.

• Melting ice

• Heating up

• Extreme weather

• Ocean disruption

☆ Global warming fast facts

• Carbon dioxide levels in the atmosphere are 412 ppm in 2020, their highest levels in 650,000 years.
• Average global temperature is up 1.9 degrees F (3.4 degrees C) since 1880.
• The minimum expanse of Arctic summer sea ice has declined 12.85% per decade since satellite measurements began, in 1979.
• Land ice has declined at the poles by 413 gigatons a year since 2002.
• Global sea level has risen 7 inches (176 millimeters) in the past century .

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