Problem 16
What is an aquifer, and how does water reach it?
Problem 17
Explain why bedrock or soil must be both porous and permeable to be an aquifer.
Problem 19
How does an artesian aquifer differ from a normal one? Why does water from an artesian well rise without being pumped?
Problem 20
What is karst topography? How can it be recognized? How does it form?
Problem 21
Describe three types of heat source for a hot spring.
Problem 22
Describe wetlands. What types of environments are included in the wetlands category?
Problem 24
Describe how wetlands mitigate flooding
