SMOG PROTECTION FOR SAUDI ARABIA RESIDENTS SECRETS

The two the onset and the end with the African Humid Time period (i.e. the ‘climatic optimum’ that finished around 5500 YBP) appear to have been abrupt, even though its astronomical leads to undergo a very gradual change (deMenocal et al. 2000). Unraveling the causes of such an abrupt climate change is surely an ongoing puzzle which has not non