Early Atmosphere
Present Atmosphere
DTE 4
Greenhouse Effect and Pollution
Meteorology
100

This gas was not present in Earth's atmosphere for the planet's first 2 billion years

Oxygen

100

Most abundant gas

Nitrogen 78%

100

The city Zac and Darin traveled to 

London

100

Layer in the stratosphere that absorbs solar radiation and greenhouse gases

Ozone Layer

100

The current condition of the atmosphere

Weather
200

These "mountains of fire" littered the planet after it was struck by several asteroids

Volcanoes

200

Lowest layer to the surface where mountains, weather, and people are found

Troposphere

200

The major greenhouse gas responsible for smog in London in the 1800s-1900s

Ozone

200

A source of this pollutant is the combustion of coal for energy

Sulfur Oxide

200

The average weather conditions of an area over a long period of time (30 years)

Climate
300

The microscopic organism that was the first photosynthesizer to produce oxygen

Cyanobacteria 

300

Temperature increases in this layer because it is closest to the Sun

Thermosphere

300

Placed on roofs to reduce rising surface temperatures

Green roofs/walls

300

A source of this pollutant is the combustion of gas/oil in vehicles

Nitrogen Oxide

300

Amount of moisture in the air compared to how much the air can hold (at that temperature)

Relative Humidity 

400

The greenhouse gas spewed out due to an increased amount of volcanic activity 

Carbon Dioxide

400
Layer in which "bad" ozone is found

Troposphere

400

The current pollutant that London is trying to reduce

PM 2.5

400

This type of solar radiation is absorbed by the ozone layer, contributing to the greenhouse effect

UV radiation

400

The average atmospheric pressure at Earth's surface

1013.25 mb 

500

The two main gases present in Earth's early atmosphere

What are hydrogen and helium?

500

The Thermosphere's alternate identity

Ionosphere

500

Londoners were charged every time they drove into the city in order to reduce these 2 gases

CO2 and/or O3

500

Areas more likely to experience secondary pollutants like carbonic acid

Urban 

500

Sinking air at this pressure system leads to clear/fair weather

High Pressure 

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