This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The present atmospheric concentration of carbon dioxide is approximately 400 ________. A) parts ... (Read 95 times)

bobbysung

  • Hero Member
  • *****
  • Posts: 519
on: Jul 13, 2018
The present atmospheric concentration of carbon dioxide is approximately 400 ________.
 
  A) parts per hundred
  B) parts per thousand
  C) parts per million
  D) parts per billion
  E) parts per trillion

Question 2

Which of the following makes up more than 10 of the mass of the atmosphere?
 
  A) Water vapor
  B) Hydrogen
  C) Argon
  D) Helium
  E) Nitrogen


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

wshriver

  • Sr. Member
  • ****
  • Posts: 318
Reply #1 on: Jul 13, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: E


bobbysung

  • Member
  • Posts: 519
Reply 2 on: Jul 13, 2018
:D TYSM

daiying98

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Children in Baltimore (1909) pull the stringy parts from beans in preparation for canning. Photograp Children in Baltimore (1909) pull the stringy parts from beans in preparation for canning. Photograp
High rates of rural poverty have been a part of the United States from its origin to the present. ... High rates of rural poverty have been a part of the United States from its origin to the present. ...
Osmosis: Water moves from an area of low solute concentration to an area of higher solute ... Osmosis: Water moves from an area of low solute concentration to an area of higher solute ...
Effect of Atmospheric Stability Effect of Atmospheric Stability
Atmospheric Layers Atmospheric Layers
Carbon-11 is used in medical imaging. The half-life of this radioisotope is 20.4 min. What ... Carbon-11 is used in medical imaging. The half-life of this radioisotope is 20.4 min. What ...
Video: Gas exchange - partial pressure, locations, external and internal respiration

For a complete list of videos, visit our video library