an amount of something left over; excess

roaming from place to place for survival

becoming expert in a particular skill

the supply of water to land or crops to help growth

not changing, firmly established

the science of obtaining metals preparing them for use

an uninhabited place where people establish a community

prepare and use for the raising of crops

a skilled worker who makes items by hand; craftsman

land that is good for growing crops

lasting or remaining unchanged indefinitely.

to keep or look after livestock

prepare, use, raising 

lasting, unchanged

science, obtaining, preparing 

firmly established 

skilled, craftsman 

keep, livestock 

supply water, growth

uninhabited, established, community

roaming, survival 

left over, excess

expert, skill

land, good, growing