Table of Contents
- 1 What are the top 2 sources of greenhouse gases?
- 2 Which greenhouse gas does the US emit the most?
- 3 Which of the following has the greatest greenhouse gas emissions?
- 4 What are the major sources of greenhouse gases?
- 5 What are the two largest sources of greenhouse gas emissions in the United States how can we reduce emissions from these sources quizlet?
- 6 Which 2 greenhouse gases contribute the most to global warming of Earth quizlet?
What are the top 2 sources of greenhouse gases?
In the United States, most of the emissions of human-caused (anthropogenic) greenhouse gases (GHG) come primarily from burning fossil fuels—coal, natural gas, and petroleum—for energy use.
Which greenhouse gas does the US emit the most?
Carbon dioxide
Carbon dioxide accounted for the largest percentage of greenhouse gases (80%), followed by methane (10%), nitrous oxide (7%), and other greenhouse gases (3%). Total U.S. emissions for 2019 totaled 6,558 million metric tons of CO2e and net emissions, taking sinks into account, totaled 5,769 million metric tons CO2e.
What is the biggest source of greenhouse gas emissions in the United States quizlet?
The largest source of greenhouse gas emissions from human activities in the United States is from burning fossil fuels for electricity, heat, and transportation.
What is the biggest cause of greenhouse gases?
The largest source of greenhouse gas emissions from human activities in the United States is from burning fossil fuels for electricity, heat, and transportation. EPA tracks total U.S. emissions by publishing the Inventory of U.S. Greenhouse Gas Emissions and Sinks.
Which of the following has the greatest greenhouse gas emissions?
CO2—also known as greenhouse gases—has become a major concern as climate change becomes a bigger issue. China is the world’s largest contributing country to CO2 emissions—a trend that has steadily risen over the years—now producing 10.06 billion metric tons of CO2.
What are the major sources of greenhouse gases?
Main Greenhouse Gases
| Greenhouse gas | Major sources |
|---|---|
| Carbon Dioxide | Fossil fuel combustion; Deforestation; Cement production |
| Methane | Fossil fuel production; Agriculture; Landfills |
| Nitrous Oxide | Fertilizer application; Fossil fuel and biomass combustion; Industrial processes |
| Chlorofluorocarbon-12 (CFC-12) | Refrigerants |
What is the largest source of co2 emissions globally?
Energy consumption is by far the biggest source of human-caused greenhouse gas emissions, responsible for a whopping 76% (37.2 GtCO2e) worldwide. The energy sector includes transportation, electricity and heat, buildings, manufacturing and construction, fugitive emissions and other fuel combustion.
What two processes emit the most carbon in the United States?
What two processes emit the most carbon in the United States? electricity generation and transportation (Electricity generation produces 40% and transportation produces 35% of all carbon emissions in the United States.)
What are the two largest sources of greenhouse gas emissions in the United States how can we reduce emissions from these sources quizlet?
Electricity generation (40%) and transportation are the two largest sources of greenhouse gas emissions in the US. 69% of the electricity in the US is generated by fossil fuels. 50% of it is from coal. One way to lessen the amount of fossil fuels used is by encouraging conservation.
Which 2 greenhouse gases contribute the most to global warming of Earth quizlet?
However, over the last 100 years the average temperature of the earth has increased by almost 1 C. Most climate scientists believe this warming is due to increased levels of greenhouse gases in the atmosphere. (a). Two of the major greenhouse gases in the atmosphere are methane and carbon dioxide.
What is the biggest cause of CO2 emissions?
Main sources of carbon dioxide emissions
- 87 percent of all human-produced carbon dioxide emissions come from the burning of fossil fuels like coal, natural gas and oil.
- The largest human source of carbon dioxide emissions is from the combustion of fossil fuels.