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

Author Question: Why did Earth retain most of its water while Venus and Mars lost theirs? What will be an ideal ... (Read 30 times)

asan beg

  • Hero Member
  • *****
  • Posts: 570
on: Jul 27, 2018
Why did Earth retain most of its water while Venus and Mars lost theirs?
 
  What will be an ideal response?

Question 2

When we look at an object that is 1,000 light-years away we see it
 
  A) as it was 1,000 years ago.
  B) as it was 1,000 light-years ago.
  C) as it is right now, but it appears 1,000 times dimmer.
  D) looking just the same as our ancestors would have seen it 1,000 years ago.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Anton

  • Sr. Member
  • ****
  • Posts: 302
Reply #1 on: Jul 27, 2018
Answer to Question 1

The basic answer is that Earth was at just the right distance to retain water as liquid. Venus lost its water because it was too hot. At its closer proximity to the Sun, Venus was warm enough to keep all its water in gaseous form in the atmosphere. When the runaway greenhouse effect became prominent, Venus became even warmer and the water vapor escaped into space. Mars was far enough from the Sun that it was cold enough for the water vapor to freeze out of the atmosphere, resulting in thick polar caps.

Answer to Question 2

A


asan beg

  • Member
  • Posts: 570
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

gcook

  • Member
  • Posts: 343
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport. The roles of transpiration, cohesion, adhesion, and tension in long-distance water transport.
2-1b Structure of the water molecule 2-1b Structure of the water molecule
A typical purified water system A typical purified water system
The chemical structure of the water molecule The chemical structure of the water molecule
Dramatic growth of algae in water treated with phosphate Dramatic growth of algae in water treated with phosphate
Earth’s Climate System Earth’s Climate System
Video: Enzyme-Catalyzed Reactions

For a complete list of videos, visit our video library