Tundra #2

At which point does tundra begin?

• Above the treeline

• Below the treeline

What are the maximum summer temperatures in the tundra?

• 5C

• 8C

• 10C

• 12C

How much of the world's moveable carbon is contained within the permafrost and the tundra?

• Half

• A third

• A quarter

Why does land saturate so quickly in Tundra regions?

• Soil is frozen so cannot hold more water

• Snowmelt infiltrates leading to rapid saturation

• There is little precipitation

• There is high precipitation

Standing water on top of the soil layer leads to...

• aerobic decomposition

• anaerobic decomposition

• release of carbon dioxide

• release of methane

Where is most carbon fixated in the tundra?

• Sedimentary rock

• Permafrost soils

• Biomass

• Atmosphere

What are the rates of precipitation and evaporation like in the tundra?

• Low

• Medium

• High

Where does decomposition take place?

• Permafrost

• Active layer

• Crystalline shield rock

When do wetlands form on the surface in the Tundra?

• Summer

• Winter

What is the process of positive feedback in the Tundra called?

• Arctic amplification

• Tundra amplification

• Arctic runaway effect