What event in Genghis Khan's childhood shaped his ruthless behavior?

Which of the following is one of the innovations that neolithic farmers become more productive? a) plow b) windmill c) tractor d) reaper

An object weighs 40n in air , weighs 20n when submerged jn water and 30n submerged in a liquid of unknown density .what is the density of the liquid?

Describe at least three effects of the drug war in mexico.