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 37 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
Excellent

strudel15

  • Member
  • Posts: 324
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Cyanide works by making the human body unable to use oxygen.

Photosynthetic Organisms Changed Earth's Atmosphere Photosynthetic Organisms Changed Earth's Atmosphere
A Prototype Hydrogen Fuel Cell Car A Prototype Hydrogen Fuel Cell Car
Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ... Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ...
Composed Salad Dish Composed Salad Dish
Layers of Earth Layers of Earth
The Distribution of Water on Earth The Distribution of Water on Earth
Video: Gas exchange - driving force

For a complete list of videos, visit our video library