× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
j
3
s
3
j
2
J
2
e
2
n
2
t
2
d
2
b
2
t
2
J
2
b
2
New Topic  
bwebb03 bwebb03
wrote...
Posts: 527
Rep: 0 0
6 years ago
Irrigation has allowed humans to grow crops in areas where natural water supplies have been limited. A major challenge that exists in these areas has been ________.
 
  A) soil erosion B) soil salinization C) high pesticide use D) low crop diversity
Textbook 
A Changing Planet

A Changing Planet


Edition: 1st
Author:
Read 81 times
2 Replies

Related Topics

Replies
wrote...
6 years ago
B
bwebb03 Author
wrote...
6 years ago
Much better than Coursehero
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  910 People Browsing
 105 Signed Up Today
Related Images
  
 276
  
 104
  
 1068