1Mixture of gases in the atmosphere.
Air
2Introduction of harmful substances into the air.
Air Pollution
3Makes up 78% of Earth's atmosphere.
Nitrogen
4Makes up 21% of Earth's atmosphere.
Oxygen
5Suspended particles or droplets in the air.
Particulate Matter (PM)
6Diameter between 2.5 - 10 micrometers.
Coarse Particles
7Diameter smaller than 2.5 micrometers.
Fine Particles
8Gases produced from burning fossil fuels.
Nitrogen Oxides (NOx)
9Organic chemicals that evaporate easily.
Volatile Organic Compounds (VOCs)
10Molecule of three oxygen atoms; protects from UV. Pollutant at ground level.
Ozone (O3)
11Gas from burning fossil fuels, triggers asthma.
Sulfur Dioxide (SO2)
12Odorless gas that reduces oxygen levels.
Carbon Monoxide (CO)
13Respiratory problems caused by air pollutants.
Health Issues
14Air pollution that reduces visibility and harms health.
Smog
15Rainfall made acidic by pollutants like SO2.
Acid Rain
16Variety of species in an ecosystem.
Biodiversity
17Country with high biodiversity, like the Philippines.
Megadiverse Country
18Human actions that contribute to air pollution.
Industrial Activities
19Negative impacts of pollution on ecosystems.
Environmental Problems
20Prolonged contact with pollutants causing health issues.
Long-term Exposure
21Health problems affecting breathing.
Respiratory Issues
22Complex compounds found in particulate matter.
Nitrates and Sulfates
23Number of islands in the Philippines.
7,641
24Reduction of forested areas impacting biodiversity.
Forest loss
25Contamination of air affecting health and environment.
Air pollution
26Variety of life in a specific habitat.
Biodiversity
27Position of a country based on environmental metrics.
Global ranking
28Law to control air pollution in the Philippines.
Philippine Clean Air Act of 1999
29Republic Act number for the Clean Air Act.
RA 8749
30Limits on pollutants from vehicles and industries.
Emissions restrictions
31Local authorities responsible for pollution control measures.
Local Government Units (LGUs)
32Innovative methods to manage pollution sustainably.
Sustainable technologies
33Area with common weather and pollution sources.
Airshed
34Referred to as the DENR, and the department that manages all decisions referring to the environment and its natural resources.
Department of Environment and Natural Resources
35Regions meeting air quality standards.
Attainment areas
36Regions failing to meet air quality standards.
Non-attainment areas
37Global health agency addressing air quality issues.
World Health Organization (WHO)
38Standards set by WHO for air pollution.
Air Quality guidelines
39Global campaign to improve air quality by 2030.
BreathLife2030
40Gases trapping heat in Earth's atmosphere.
Greenhouse gases (GHGs)
41Natural process maintaining Earth's temperature.
Greenhouse effect
42Primary greenhouse gas from fossil fuel combustion. Most abundant human-produced greenhouse gas.
Carbon dioxide
43Potent greenhouse gas from agriculture and waste. Traps heat more effectively than CO2.
Methane
44Increase in Earth's average temperature due to GHGs.
Global warming
45Increase in ocean water levels due to melting ice.
Rising sea levels
46Destruction of habitats for species like polar bears.
Polar habitat loss
47Primary source of CO2 emissions, mainly used for energy production.
Fossil Fuels
48Major source of methane emissions, mainly used for food production.
Agriculture
49Most abundant greenhouse gas, concentration varies with temperature.
Water Vapor (H2O)
50Synthetic gases with high global warming potential.
Hydrofluorocarbons (HFCs)
51Synthetic gas used in electrical insulation.
Sulfur Hexafluoride (SF6)
52Gases naturally present without harm to humans.
Natural Greenhouse Gases
53Man-made gases causing significant environmental harm.
Synthetic Greenhouse Gases
54Group of synthetic gases used in refrigeration.
Chlorofluorocarbons (CFCs)
55Damage to ozone layer from CFCs and halons.
Ozone Depletion
56Harmful radiation absorbed by the ozone layer.
Ultraviolet Radiation (UV)
57Measure of a gas's heat-trapping ability.
Global Warming Potential (GWP)
58Stratospheric layer protecting Earth from UV radiation.
Ozone Layer
59Polar regions impacted by ozone layer damage.
Polar Ice Caps
60Water vapor released from plants into the atmosphere.
Transpiration
61The removal of trees faster than forests can replace themselves.
Deforestation