Top Posters
Since Sunday
w
5
a
3
j
2
a
2
t
2
u
2
r
2
j
2
j
2
l
2
d
2
y
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
Evidence from the analysis of zircon crystals suggests that the Earth
A) may have been habitable immediately after its formation
B) could only have been habitable after significant amounts of oxygen had built up in its atmosphere
C) could only have been habitable after the end of the Hadean Eon 500 million years ago
D) may have been habitable in as little as 100 million years after its formation
Textbook 
Life in the Universe

Life in the Universe


Edition: 4th
Authors:
Read 70 times
2 Replies
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...
#2
6 years ago
Awesome Slight Smile
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1181 People Browsing
 122 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 258
  
 4501
  
 53
Your Opinion
Previous poll results: Who's your favorite biologist?