« previous next »

Author Question: Earth's first atmosphere (approximately 4.6 billion years ago) was most likely composed of ____. A) ... (Read 103 times)

yoooooman

  • Hero Member
  • *****
  • Posts: 557
on: Jul 13, 2018
Earth's first atmosphere (approximately 4.6 billion years ago) was most likely composed of ____.
 A) nitrogen and oxygen
  B) hydrogen and helium
  C) carbon dioxide and nitrogen
  D) oxygen and carbon dioxide

Question 2

A chart that plots how air temperature has changed over the past five days at a given station is a(n) ____.
 A) sounding
  B) meteogram
  C) atmospheric model
  D) ensemble forecast


kescobar@64

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 13, 2018
Answer to Question 1

B

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

Medication errors are three times higher among children and infants than with adults.

The Structure of the Atmosphere The Structure of the Atmosphere
During the Pullman strike in Chicago, workers protesting wage cuts did $340,000 in property damage, During the Pullman strike in Chicago, workers protesting wage cuts did $340,000 in property damage,
The Structure of the Atmosphere The Structure of the Atmosphere
Foundations of Earth Science, 7th Edition Foundations of Earth Science, 7th Edition
Earth 65 Million Years Ago Earth 65 Million Years Ago
Three years old drawing Three years old drawing
Video: Chromosome structural organization/ Mechanisms for chromosome movement Animation

For a complete list of videos, visit our video library