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 45 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
Gracias!

vickybb89

  • Member
  • Posts: 347
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

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?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.

Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth
The Pathways of Water and Solutes in a Plant. The Pathways of Water and Solutes in a Plant.
Structure of the water molecule Structure of the water molecule
The Importance of Water The Importance of Water
The Excretory System Water and waste products from cells The Excretory System Water and waste products from cells
Earth Atmosphere Earth Atmosphere
Video: Arthritis

For a complete list of videos, visit our video library