Global Climate Change Over the past two decades, there has been an ever increasing concern that average global air temperatures are increasing as a result of increased levels of greenhouse gases (carbon dioxide, methane, ozone) in the atmosphere.
(Global Climate; Change; T:Over the past two decades) (average global air temperatures; are increasing; as a result of increased levels of greenhouse gases)
Global Climate average global air temperatures
Change are increasing
T:Over the past two decades
as a result of increased levels of greenhouse gases