Burning fossile fuels, such as in cars, has raised the carbon dioxide levels in the Earth's atmosphere to their highest levels in 160,000 years - (Waltar Lyons Pg. 345).
(Burning fossile fuels, such as in cars; has raised; the carbon dioxide levels in the Earth's atmosphere; to their highest levels; T:in 160,000 years)
Burning fossile fuels, such as in cars
has raised
the carbon dioxide levels in the Earth's atmosphere to their highest levels T:in 160,000 years