Paragraph on Earth’s Atmosphere
Paragraph on Earth's Atmosphere! The Earth's atmosphere is 99.9% nitrogen, oxygen and argon, of the remaining 0.1%, roughly half (0.04%) is accounted for by the three transition gases CO2, Ne and He. The remaining minute fraction of the atmosphere (0.66%) is composed of a complex mixture of hundreds of trace gases, the most abundant being methane at 1.7 ppm. Many [...]