Antibiotics.
atlantis
sad song
illiterate women
Elexa is a Greek name and means 'mankinds helper'
a fruit
Probably the pulley amongst the simple machines is having the greatest impact on mankind.
because it is scared and needs freedom from mankinds slaughter
To learn and to explore. Both come out of mankinds curiousity.
because they are very important to the world and we use them everyday such as a wheel and axle that are used on doorknobs.
use mental capacity to ideate and formulate novel solutions to mankinds' problems
pre tech is the use of available material from the environment to solve mankinds need