Top Posters
Since Sunday
z
4
n
4
t
4
k
3
x
3
r
3
m
3
j
3
c
3
l
3
e
3
s
2
Home Q & A Board Science-Related Homework Help Physics Astronomy
New Topic  
adreamer adreamer
wrote...
Go to Answer
Posts: 891
Rep: 0 0
7 years ago
The number of impact craters on the slopes of Tharsis volcanoes suggests that they have been inactive
A) since Mars formed 4.6 billion years ago
B) for at least a billion years
C) for at least tens of millions of years
D) only for the last few hundred years
Textbook 
Life in the Universe

Life in the Universe


Edition: 4th
Authors:
Read 76 times
1 Reply
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

adreamer Author
wrote...

7 years ago
Thank you, thank you, thank you!
kobbhy
wrote...

Yesterday
This site is awesome
taydav
wrote...

2 hours ago
This calls for a celebration Person Raising Both Hands in Celebration
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  836 People Browsing
 101 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 301
  
 87
  
 364
Your Opinion
How often do you eat-out per week?
Votes: 81
Previous poll results: Do you believe in global warming?