Top Posters
Since Sunday
r
4
L
4
3
d
3
M
3
l
3
V
3
s
3
d
3
a
3
g
3
j
3
SlideshowReport

Tar sands from Alberta, Canada

Description
(a) Tar sands from Alberta, Canada. (b) It takes 2 tons of sand to make a barrel of oil. This shovel suggests the enormous scale of tar-sand extraction.
Related Images
Add Comment
Explore
Post your homework questions and get free online help from our incredible volunteers
  1877 People Browsing