Amazing Atmosphere
Beautiful Biosphere
Lovely Lithosphere
Heavenly Hydrosphere
Those Darn Humans
100

The layer of the atmosphere that contains the ozone layer

Stratosphere

100

The variety of organisms in an ecosystem

Biodiversity

100

The boundary type where plates move apart

Divergent Boundary

100

The phenomena caused by runoff that leads to an algal bloom

Eutrophication

100

The growth pattern of a country where the age structure diagram is NARROWER at the BOTTOM than at the TOP 

Decreasing/declining/shrinking/negative

200

The trapping of infrared radiation near the planet's surface by the atmosphere

The Greenouse Effect

200

The amount of energy moving from prey to predator upon consumption

10%

200

A renewable source of energy derived from the lithosphere

Geothermal Energy

200

The large convection current in the ocean that circulates global water and maintains temperature regulation

Thermohaline circulation

200

If we gotta burn fossil fuels, this is the cleanest burning one

Natural gas

300

A renewable source of energy coming from the troposphere.

Wind

300

The form of succession that starts without soil

primary succession

300

The most common boundary type in California

Transform Boundaries

300

The process of water traveling down through soil towards groundwater

percolation/infiltration

300

The phenomenon caused by NOx and SOx emissions that can degrade statues and change soil pH

Acid Deposition

400

The direction of deflection for a plane traveling in the southern hemisphere

Left/Counter Clockwise

400

The process of a toxin growing more present in an organism over its lifetime

Bioaccumulation

400

The partially decayed matter in the O Horizon

Humus

400

The chemical compound formed from the interaction between CO2 and H2O

Carbonic Acid (H2CO3)

400

The phenomenon where the temperature is raised by several degrees inside a city

Urban heat island 

500

The phenomenon in which altitude affects the temperature of the air in the troposphere

Adiabatic heating/cooling

500

The reproductive strategy of a dandelion

r-selected

500

The type of mining that removes overburden in layers

strip mining

500

The pattern of the strengthening and weakening of the tradewinds in the south Pacific

El NiƱo Southern Oscillation (ENSO)

500

The biggest source of greenhouse gas emissions in the US

Electricity production

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