This topic contains a solution. Click here to go to the answer

Author Question: Why did Earth retain most of its water while Venus and Mars lost theirs? What will be an ideal ... (Read 37 times)

asan beg

  • Hero Member
  • *****
  • Posts: 570
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
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
Great answer, keep it coming :)


diana chang

  • Member
  • Posts: 288
Reply 3 on: Yesterday
Gracias!

 

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Did you know?

Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

For a complete list of videos, visit our video library