Top Posters
Since Sunday
w
3
w
3
e
3
3
r
3
g
2
2
b
2
M
2
V
2
f
2
c
2
Home Q & A Board Science-Related Homework Help Physics Astronomy
New Topic  
hermiz hermiz
wrote...
Go to Answer
Posts: 569
Rep: 0 0
7 years ago
The extent to which Mars has been habitable essentially boils down to the
A) question of whether liquid water has ever been present on its surface
B) question of whether oceans of liquid water have existed on its surface
C) amount of water that has been present on its surface
D) length of time liquid water has been present at or below its surface
Textbook 
Life in the Universe

Life in the Universe


Edition: 4th
Authors:
Read 50 times
1 Reply
Life in the Universe, 4/E (Bennett, Shostak)
Replies
Answer verified by a subject expert
DonskoyDonskoy
wrote...
#1
Top Poster
Posts: 582
Rep: 11 0
7 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

hermiz Author
wrote...

7 years ago
This helped my grade so much Perfect
fgarza2146
wrote...

Yesterday
Brilliant ツ
shimyshiguy
wrote...

2 hours ago
Correct Slight Smile TY
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  850 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 4519
  
 877
  
 1606
Your Opinion
Who will win the 2024 president election?
Votes: 119
Closes: November 4
Previous poll results: Which industry do you think artificial intelligence (AI) will impact the most?