The document discusses different types of greenhouse gases and fossil fuels that contribute to global warming. It notes that the main greenhouse gases produced by humans are carbon dioxide, methane, and nitrous oxide. It also provides the percentages of the world's energy sourced from coal, oil, and natural gas, as well as their projected supplies. Additionally, it outlines major air pollutants like carbon monoxide, nitrogen oxides, sulfur dioxide, ozone, particulate matter, and lead that are emitted from vehicles, construction and can negatively impact human health.

1. WHAT ON EARTH Clara Gregorio Barberan

2. Greenhouse Effect The main greenhouse gases produced by man are: Carbon Diozide (CO2) Methane Nitrous Oxide

3. Are natural substances Are Non-renewable FOSSIL FUELS Coal Oil Natural Gas

4. Percentage World’s Energy:27% Main Uses: To produce electricty,change water into steam… Supply: 200 years more. Coal:

5. Percentatge World’s Energy: 40% Main Uses: to produce gasoline, diesel fuel and chemicals. Supply: Finish in the year 2100 Oil:

6. Percentatge World’s Energy: 23% Main Uses: For heating homes, buidings, water and cooking. Also to make electricity. Natural Gas:

7. Most of the sources are emissions from cars, trucks, contructions… The effects are problems in the respiratory system, head aclest, premature death… Major Air Pollutants

8. The most important ones are: -Carbon Monoxide -Nitrogen Oxides -Sulfur Dioxide -Ozone -Particular Matter -Lead