Author Question: This was not a prominent gas in the Earth's early atmosphere A) methane. B) ammonia. C) ... (Read 90 times)

aabwk4

  • Hero Member
  • *****
  • Posts: 593
This was not a prominent gas in the Earth's early atmosphere
 A) methane.
  B) ammonia.
  C) hydrogen.
  D) helium.
  E) oxygen.

Question 2

This is the most fundamental reason why Earth currently has an atmosphere
 A) strong winds keep the atmosphere moving horizontally above the Earth.
  B) the Earth's magnetic field prevents gas molecules from escaping into space.
  C) the Earth's gravity is strong enough to prevent most gases from escaping into space.
  D) Earth's atmosphere is quite dense, and thus very viscous.
  E) the solar wind constantly adds gas particles to the atmosphere.



mcni194

  • Sr. Member
  • ****
  • Posts: 311
Answer to Question 1

E

Answer to Question 2

C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

For a complete list of videos, visit our video library