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

Author Question: Earth's first atmosphere was composed of A) oxygen, hydrogen, and helium. B) hydrogen and ... (Read 115 times)

Anajune7

  • Hero Member
  • *****
  • Posts: 574
on: Jul 29, 2018
Earth's first atmosphere was composed of
 
  A) oxygen, hydrogen, and helium.
  B) hydrogen and helium, with trace amounts of ammonia and methane.
  C) gases from volcanic eruptions.
  D) oxygen, water vapor, carbon dioxide, and methane.

Question 2

Earth's original atmosphere was
 
  A) very similar to the atmosphere we have today.
  B) rich in both O2 and O3.
  C) obliterated after the birth of the Sun.
  D) a mixture of N2, CO2, and O3.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

orangecrush

  • Sr. Member
  • ****
  • Posts: 350
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: C


Anajune7

  • Member
  • Posts: 574
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

upturnedfurball

  • Member
  • Posts: 334
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

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?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

When the exhaust is lean, the output of a zirconia oxygen sensor is below 450 mV. When the exhaust is lean, the output of a zirconia oxygen sensor is below 450 mV.
The OBD-II catalytic converter monitor compares the signals of the upstream and downstream oxygen ... The OBD-II catalytic converter monitor compares the signals of the upstream and downstream oxygen ...
Heating of the atmosphere Heating of the atmosphere
The Atmosphere The Atmosphere
Long-wave energy flux is emitted from Earth Long-wave energy flux is emitted from Earth
Earth as a System: The Hydrologic Cycle Earth as a System: The Hydrologic Cycle
Video: Summary of female reproductive cycle days 1-28

For a complete list of videos, visit our video library