Oxygen did not exist in the Earth's atmosphere until these organisms evolved to photosynthesize.
What are plants?
Ozone gas has this many atoms.
What is 3?
Examples of this include CO, CO2, NOs, and SO2.
What are primary pollutants?
This type of acid deposition is found closer to the source.
What is dry deposition?
These brothers faced off in Super Bowl LVII.
Who are the Kelce brothers?
This effect is observed in cities due to heat radiating off their impervious surfaces.
What is an urban heat island?
This breaks and bonds ozone molecules together.
What is UV radiation?
This kind of reaction leads to the formation of secondary pollutants.
What is a photochemical reaction?
These are the two main primary pollutants found in acid deposition.
What are NOx and SOx?
Dust, viruses, pollen, and dander are examples of this.
What are particulates?
This is defined as the level of kinetic energy within a substance.
What is temperature?
This was first observed in the South Pole in the mid-1970s and has begun shrinking in recent decades.
Tropospheric ozone is formed by a reaction of this gas with water.
What is NO2?
The UN Convention on Long Range Transboundary Air Pollution aimed to cut emissions of this pollutant and proved highly successful.
What is sulphur?
This American city is considered one of the hottest cities in the world and experiences over 120 days with temperatures over 100 degrees annually.
What is Phoenix?
Without this naturally occurring phenomenon, Earth's temperature would be inhospitable for life.
What is the Greenhouse Effect?
These were found in refrigerants, aerosol products, and air conditioning units and led to the ozone being destroyed.
What are CFCs?
Ozone prevents plants from photosynthesizing by damaging this chemical compound.
What is chlorophyll?
This symbiotic algae and fungus combination is an example of an indicator species and is found in regions with good air quality.
What is lichen?
Name this extinct, third largest woodpecker in North America.
What is an Ivory Billed Woodpecker?
The majority of solar radiation passes through Earth's upper atmosphere and does this.
What is hit the Earth's surface?
Levels of this element in the stratosphere peaked in 2005 and will continue to decline until at least 2050.
What is Chlorine?
Smog is trapped at the Earth's surface due to this natural phenomenon during hot and dry conditions.
What is thermal inversion?
Damage seen in forests in this European country was one of the first recorded signs of acid deposition.
What is Germany?
Number 1 Purdue's men's basketball was upset by this fellow Big Ten team on Super Bowl Sunday to give them their 3rd loss of the season.
What is Northwestern?