The science and practice of farming, including cultivation of soil and raising livestock....
The layer of gases surrounding Earth, held in place by gravity....
A branch of mathematics dealing with symbols and the rules for manipulating those symbols....
The simulation of human intelligence processes by computer systems....
The scientific study of celestial objects, space, and the universe as a whole....
The capital and largest city of Greece, birthplace of democracy....
The art and science of designing and constructing buildings....
Medicines used to treat bacterial infections by killing or inhibiting bacteria....
The ancient Macedonian king who created one of history's largest empires....
The largest river by discharge in the world, flowing through South America....