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 93 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
YES! Correct, THANKS for helping me on my review

Chelseyj.hasty

  • Member
  • Posts: 319
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Several species of squirrels have melanistic phases. In large parts of United States and Canada, the Several species of squirrels have melanistic phases. In large parts of United States and Canada, the
Carbon Cycle Carbon Cycle
Although average brain size increases gradually though time in H. erectus, individuals with small br Although average brain size increases gradually though time in H. erectus, individuals with small br
The Principal Parts of a Multipolar Neuron The Principal Parts of a Multipolar Neuron
Eight Parts of Speech Eight Parts of Speech
Threshold Levels of Carbon Monoxide Threshold Levels of Carbon Monoxide
Video: Elementary kinetics

For a complete list of videos, visit our video library