The use of coal had decreased as a result of competition form oil and ?

From where does the solar winds generate

What is the difference between the cultures of central asia and the caucasus region? the majority of people in central asia are muslim; the majority in the caucasus region are christian. the primary language in central asia is armenian; the primary language in the caucasus region is russian. central asia has been plagued by ethnic unrest; the caucasus region has had little ethnic conflict. the effects of soviet rule can still be seen in central asia; the caucasus region has developed its own identity since the fall of the ussr.

Hey, i was what is consisted in a sustainable city? like what unique designs they have, etc. for answering ; )