EVERYTHING ABOUT PROTECTION AGAINST DUST AND ALLERGENS IN SAUDI ARABIA

Both equally the onset and the end with the African Humid Time period (i.e. the ‘climatic optimum’ that ended somewhere around 5500 YBP) surface to are abrupt, Though its astronomical brings about go through an exceedingly gradual transform (deMenocal et al. 2000). Unraveling the causes of these an abrupt climate change is an ongoing puzzle whi