Top Posters
Since Sunday
A
6
j
6
c
5
m
5
C
5
d
5
s
5
n
4
i
4
d
4
d
4
J
4
Home Q & A Board Science-Related Homework Help Physics Astronomy
New Topic  
hermiz hermiz
wrote...
Go to Answer
Posts: 569
Rep: 0 0
6 years ago
Humanity has been thinking about the possibility of extraterrestrial life
A) since the first reports of unidentified flying objects in the 1940's
B) since reports of canals on Mars were first made in the 1870's
C) throughout human history since the time of the ancient Greeks
Textbook 
Life in the Universe

Life in the Universe


Edition: 4th
Authors:
Read 90 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
6 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...

6 years ago
Thank you, thank you, thank you!
Katey_maree
wrote...

Yesterday
Helped a lot
lipop
wrote...

2 hours ago
Thanks for your help!!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  668 People Browsing
 107 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 387
  
 399
  
 138
Your Opinion
Who will win the 2024 president election?
Votes: 8
Closes: November 4
Previous poll results: Where do you get your textbooks?