The answer would be sheep because all of the others were first from Australia.
One reason for the development of amn early civilization in the Tigris-Euphrates river valley was that.<span>periodic flooding </span>left<span> rich soil, which was ideal for farming.</span><span> </span>
Heat causes chemical reaction so that might be a way in which people use chemical properties to separate one substance from another substance .
This is a very poor question - your teacher, clearly, understands very little about the collapse of the USSR and Gorbachev and his reforms.
<span>These 'provisions' are not what Perestroika was about - your teacher, and possibly your text book, has confused two completely separate and distinct Soviet reforms - Perestroika and Demokratizatsiya (democratisation). All of the 'Provisions of Perestroika' that you have listed are, in fact, parts of the Demokratizatsiya reforms. </span>
<span>Perestroika was the restructuring of party and state organisations, but particularly enterprises, factories, mines, collective farms and other 'means of production'. It sought to re-structure the command economy making it more efficient and better able to compete globally and to meet the needs of Soviet consumers and other end users. </span>
<span>What Perestroika demonstrated was the gross inefficiencies of the Soviet Command Economy, and that the economic base of the country needed frastic and radical reforms - not that the Communist system itself was failing. </span>
