PLEASE HELP DO NOT WASTE ANSWERS URGENT WILL MARK BRAINLIEST

What is one main reason some governments in the twentieth century began campaigns of genocide? a) a minority group wanted total independence. b) a minority group wanted more say in lawmaking. c) a minority group had different cultural customs. d)a minority group protested against government policy.

As our current atmosphere formed, the concentrations of various atmospheric gases fluctuated. match each gas with the explanation that best describes how its proportion changed during the evolution of the atmosphere.

Compared with the executive and legislative branches