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

Author Question: Which element would not have been found in Earth's early atmosphere? What is the most abundant gas ... (Read 37 times)

LCritchfi

  • Hero Member
  • *****
  • Posts: 519
on: Jul 27, 2018
Which element would not have been found in Earth's early atmosphere? What is the most abundant gas found in Earth's atmosphere today?
 
  a. nitrogen (N2)
 b. carbon dioxide (CO2)
  c. helium (He)
 d. hydrogen (H)
 e. oxygen (O2)

Question 2

Astronomers can determine the interiors of main sequence stars by _____.
 
  a. studying their atmospheres
 b. creating stellar models
 c. detailed observations of the Sun
 d. using the Hertzsprung-Russell Stellar Model (HRSM)
  e. satellite observations of the closest stars


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jgranad15

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jul 27, 2018
Answer to Question 1

a

Answer to Question 2

b


LCritchfi

  • Hero Member
  • *****
  • Posts: 519
Reply #2 on: Jul 27, 2018
TY


jgranad15

  • Sr. Member
  • ****
  • Posts: 345
Reply #3 on: Jul 27, 2018
You're welcome


« previous next »
 

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

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?

The average adult has about 21 square feet of skin.

Examples of deep-sea corals found in the Sable Gully, 200 km off the coast of Nova Scotia. Examples of deep-sea corals found in the Sable Gully, 200 km off the coast of Nova Scotia.
Water potentials decrease (become more negative) as one moves from soil to plant to atmosphere Water potentials decrease (become more negative) as one moves from soil to plant to atmosphere
Cutaway Model of Earth Cutaway Model of Earth
Earth’s Spheres Earth’s Spheres
Tardigrade wasn't correct, nor was Gastrotricha. What on earth is this asking me. Tardigrade wasn't correct, nor was Gastrotricha. What on earth is this asking me.
Fossils of Some Early Eukaryotes Fossils of Some Early Eukaryotes
Video: Resting membrane potential - electrical polarity and maintenance requirements

For a complete list of videos, visit our video library