« previous next »

Author Question: Once released into the atmosphere, chlorofluorocarbons remain about ____. a. 10-20 days b. ... (Read 139 times)

ARLKQ

  • Hero Member
  • *****
  • Posts: 571
on: Jul 13, 2018
Once released into the atmosphere, chlorofluorocarbons remain about ____.
   a. 10-20 days
   b. 50-100 years
   c. 1-2 years
   d. 1-2 month
   e. 1000 years

Question 2

The so-called ozone hole is observed above the ____.
   a. continent of North America
   b. equator
   c. continent of Australia
   d. continent of Antarctica
   e. continent of Asia


jesse.fleming

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Jul 13, 2018
Answer to Question 1

ANSWER: b

Answer to Question 2

ANSWER: d


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Titan's dense atmosphere shrouds the moon beneath a tan haze in this image. Titan's dense atmosphere shrouds the moon beneath a tan haze in this image.
Temperature Profile of Earth’s Atmosphere Temperature Profile of Earth’s Atmosphere
The Atmosphere of Mars The Atmosphere of Mars
Amount of Energy Released by Earthquakes of Different Magnitudes Amount of Energy Released by Earthquakes of Different Magnitudes
Solar EM Radiation Penetration into Earth's Atmosphere Solar EM Radiation Penetration into Earth's Atmosphere
Synaptic transmission. (a) Action potential reaches synapse; (b) neurotransmitter released synaptic ... Synaptic transmission. (a) Action potential reaches synapse; (b) neurotransmitter released synaptic ...
Video: Stages of Mitosis - Prophase, Prometaphase, Metaphase, Anaphase & Telophase

For a complete list of videos, visit our video library