Pls me what is a lawful permanent resident and what is selective service

""Green card" also refers to an immigration process of becoming a permanent resident. The green card serves as proof that its holder, a lawful permanent resident (LPR), has been officially granted immigration benefits, including permission to reside and take employment in the United States." and "The Selective Service System is an independent agency of the United States government that maintains information on those potentially subject to military conscription."

the scientific revolution brought us a renewed understanding of humanity and our place in the universe, new scientific equipment, and new laws as a basis for future scientific discovery.