Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
Home Q & A Board Science-Related Homework Help Geography and Earth Sciences
New Topic  
MrDereche MrDereche
wrote...
Go to Answer
Posts: 4095
Rep: 304 0
9 years ago
Which of the following geologic materials would have the highest groundwater velocities and be least effective in removing unwanted pollutants from the water?
A) unconsolidated medium-grained sand; sand grains are coated with clay minerals
B) sandstone; well-cemented with a few, widely spaced vertical fractures
C) lakebeds; unconsolidated very fine-grained sand and silt
D) limestone; numerous solution channels and fractures widened by dissolution
Read 425 times
1 Reply
Replies
Answer accepted by topic starter
milestone23milestone23
wrote...
#1
Top Poster
Posts: 9919
Rep: 556 0
9 years ago
Sign in or Sign up in seconds to unlock everything for free
1
Retired master

Related Topics
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1223 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 261
  
 2116
  
 200
Your Opinion
How often do you eat-out per week?
Votes: 79
Previous poll results: Who's your favorite biologist?