Nobels original legacy of nine million dollars was invested, and the interest on this sum is used for the awards which vary from S30,000 to $125,000.
Giải chi tiết:
Around 150 B.C. the Greek astronomer Hipparchus developed a system to classify stars according to brightness.
Biogas can be utilized for electricity production, cooking, space heating, water heating and process heating.
Population growth rates vary among regions and even among countries within the same region.