« previous next »

Author Question: What is the main source of the increased levels of carbon dioxide in the atmosphere? a. Methane ... (Read 58 times)

sam.t96

  • Hero Member
  • *****
  • Posts: 570
on: Jun 19, 2018
What is the main source of the increased levels of carbon dioxide in the atmosphere?
 
  a. Methane c. Landfills b. Deforestation d. Burning fossil fuels

Question 2

What is the percentage by which CO2 concentration has increased since 1750?
 
  a. 21 c. 41 b. 31 d. 51
McKnight's Physical Geography: A Landscape Appreciation ¦ Hess, Tasa ¦ 12th Edition
Buy Test-Bank


Zack0mack0101@yahoo.com

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jun 19, 2018
Answer to Question 1

ANS: D
The main source of the increased levels of carbon dioxide in the atmosphere is the burning of fossil fuels, causing 75 of the increase.



Answer to Question 2

ANS: B
According to the IPCC carbon dioxide concentration has increased by 31 since 1750.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Taking off is one of the main times albatrosses use flapping to fly, and is the most energetically d Taking off is one of the main times albatrosses use flapping to fly, and is the most energetically d
Tracing the Source of a Water-Borne Disease Tracing the Source of a Water-Borne Disease
In The Gross Clinic (1875), by Thomas Eakins, Professor Samuel Gross’s team of surgeons cuts through In The Gross Clinic (1875), by Thomas Eakins, Professor Samuel Gross’s team of surgeons cuts through
Association of Different HLA Alleles and Increased Susceptibility to Autoimmune Diseases Association of Different HLA Alleles and Increased Susceptibility to Autoimmune Diseases
Carbon Monoxide and Water Molecules Interaction Carbon Monoxide and Water Molecules Interaction
Atmospheric carbon dioxide concentrations in ppm Atmospheric carbon dioxide concentrations in ppm
Video: Bipolar Disorder

For a complete list of videos, visit our video library