Tehran is the capital and biggest city. Iran is the eighteenth largest country in the world. It has more than 80 million people. Iran has been a member of the United Nations since 1945. It is a member of the Organization of the Petroleum Exporting Countries (OPEC). It is an Islamic republic.
Furthermore, it is highly unlikely that future increases in the air's CO2 content will produce any global warming; for there are numerous problems with the popular hypothesis that links the two phenomena. A weak short-term correlation between CO2 and temperature proves nothing about causation. Proponents of the notion that increases in the air's CO2 content lead to global warming point to the past century's weak correlation between atmospheric CO2 concentration and global air temperature as proof of their contention.
Changes in atmospheric concentrations of greenhouse gases (GHGs) and aerosols, land cover and solar radiation alter the energy balance of the climate system. {2.2}. Global GHG emissions due to human activities have grown since pre-industrial times, with an increase of 70% between 1970 and 2004 (Figure SPM.3). {2.1}. Carbon dioxide (CO2) is the most important anthropogenic GHG. Its annual emissions grew by about 80% between 1970 and 2004.