Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
New Topic  
Alamojay Alamojay
wrote...
Posts: 1898
9 years ago
For most of human history, and in developing countries today, the major source of energy has been
A) natural gas.
B) oil.
C) wind.
D) muscle power.
Textbook 
Environmental Science: Toward A Sustainable Future

Environmental Science: Toward A Sustainable Future


Edition: 12th
Authors:
Read 418 times
1 Reply
Super Cuban Dude
Smiling Face with Open Mouth
Replies
Answer verified by a subject expert
JesuisMelJesuisMel
wrote...
Top Poster
Posts: 2453
9 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

Alamojay Author
wrote...

9 years ago
Just got PERFECT on my quiz
wrote...

Yesterday
Thank you, thank you, thank you!
wrote...

2 hours ago
Thanks
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1289 People Browsing
Related Images
  
 246
  
 867
  
 12952
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 741

Previous poll results: What's your favorite math subject?