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

Author Question: The percentages of various gases in the atmosphere indicate that the composition of the atmosphere ... (Read 153 times)

erika

  • Hero Member
  • *****
  • Posts: 522
on: Jul 14, 2018
The percentages of various gases in the atmosphere indicate that the composition of the atmosphere is controlled
 
  A) totally by the amount and type of gases given off during volcanic eruptions.
  B) totally by the composition of comets and meteors that strike Earth.
  C) to a significant extent by biological processes occurring on Earth.
  D) exclusively by chemical reactions between sunlight and the gases in the atmosphere.

Question 2

Oxygen ( ) is
 
  A) a gas which principally originates from volcanic sources.
  B) a by-product of photosynthesis.
  C) one of the gases from Earth's earliest atmospheres.
  D) now measured at 78.084 by volume in the homosphere.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

pikon

  • Sr. Member
  • ****
  • Posts: 361
Reply #1 on: Jul 14, 2018
Answer to Question 1

C

Answer to Question 2

B


erika

  • Member
  • Posts: 522
Reply 2 on: Jul 14, 2018
Gracias!

fatboyy09

  • Member
  • Posts: 358
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

There are more bacteria in your mouth than there are people in the world.

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?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Changes in boreal forest composition along a chronosequence in Quebec. Dates refer to the year of th Changes in boreal forest composition along a chronosequence in Quebec. Dates refer to the year of th
Percentages of adolescents indicating Benefits and Costs of employment. Percentages of adolescents indicating Benefits and Costs of employment.
Ginkgo Biloba label. The label indicates the product is standardized to percentages of the two ... Ginkgo Biloba label. The label indicates the product is standardized to percentages of the two ...
A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ... A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ...
Pressure is a result of the atmosphere’s mass. Pressure is a result of the atmosphere’s mass.
Composition of Continental Crust Composition of Continental Crust
Video: Hormonal regulation of blood pressure - RAA system

For a complete list of videos, visit our video library