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100
Coliform Bacteria
What is an organism associated with beach closures
100
Seamount
What is an underwater volcano
100
Tributaries
What are smaller rivers and streams
100
Glaciers
What are masses of ice and snow
100
Water moving in a specific direction
What is a current
200
Raw or improperly treated sewage
What can cause Coliform numbers to rapidly increase
200
The challenger deep
What is the worlds deepest point
200
Carve out steep banks
What are young fast flowing rivers
200
Antarctica
What continent is covered by a continental glacier
200
An area surrounded by high land
What is a watershed
300
Parasites
What causes swimmers itch
300
Landslides, lava flows, river deposits, ice, and beavers
What are 5 ways natural dams are created
300
Higher elevations
What separates 2 watersheds
300
A big chunk of ice
What is an iceberg
300
The circular flow of ocean waters made up of several major currents
What is a gyre
400
Acid precipitation
What harms plant growth, and dissolves rocks
400
60000km
How long is the mid-ocean ridge
400
The continental divide
What separates water flowing into the pacific ocean
400
At the end of the last ice age
When did glaciers in north america start to melt
400
Gently sloping land on both sides of a river
What is a flood plain