« previous next »

Author Question: What is the main source of the increased levels of carbon dioxide in the atmosphere? a. Methane ... (Read 70 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?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

The stability of carbon bonds makes life possible even in extreme environments The stability of carbon bonds makes life possible even in extreme environments
Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that Bronfenbrenner’s model of the ecological-systems approach to studying development. He suggested that
Young adults with low levels of parental support report significantly better scores on measures of ... Young adults with low levels of parental support report significantly better scores on measures of ...
Vaillant's Six Levels of Defense Mechanisms Vaillant's Six Levels of Defense Mechanisms
Carbon Dioxide, Trace Gases, and Climate Change Carbon Dioxide, Trace Gases, and Climate Change
Increased Cancer Risk with BRCA1 or BRCA2 Mutation Increased Cancer Risk with BRCA1 or BRCA2 Mutation
Video: Humerus Adduction Animation

For a complete list of videos, visit our video library