Composition of the Atmosphere extended definition. The atmosphere contains many gases, most in small amounts, including some pollutants and greenhouse gases. The most abundant gas in the atmosphere is nitrogen, with oxygen second. Argon, an inert gas, is the third most abundant gas in the atmosphere.
(CNN)Iran has completed the necessary steps in a deal to restrict its nuclear program, meaning international economic sanctions are lifted, officials from the EU and the U.N. nuclear watchdog agency said Saturday. Relations between Iran and the IAEA now enter a new phase.
The UK insists the sanctions are a very serious matter, but Russia has said the measures are detached from reality. The EU sanctions, which have been imposed on 33 Russian and Ukrainian officials, are designed to put pressure on Russian president Vladimir Putin.he UK insists the sanctions are a very serious matter, but Russia has said the measures are detached from reality. The EU sanctions, which have been imposed on 33 Russian and Ukrainian officials, are designed to put pressure on Russian president Vladimir Putin.