Question:
Erosion can occur when:
Response:
The top soil is removed
Machines create ruts
Water flow builds up on the road
The soil is compacted
All of the above
Siltation results from:
Decaying leaves
Erosion
Heavy snow
Siltation can destroy:
Water quality
Fish habitat
Aquatic plants All of the above
List three ways to reduce erosion:
Wildlife refers to:
Mammals
All wild organisms and their habitat
Campers
Roads construction can:
Dry up wetlands
Flood wetlands
Both
List three reasons to avoid building roads in wet areas:
When crossing a stream, locate road:
to approach bridge in a straight line
On a low slope
At a stable location
If possible lay out road:
On high ground
On gentle slopes
Following the contour
Pick the best road building material:
Sand
Silt
Gravel
Clay
Natural Resources