Aresearcher is concerned that gender may affect how subjects respond to an experimental stimulus. so subjects are paired with another subject who has the same gender, and one member from each pair is assigned by a flip of a coin to the experimental group and one to the control group. this method of assigning subjects to groups is called

Eter lives in a beautiful region. peter and other residents of his region use water from the river that flows through their region. recently, mark industries decided to set up their chemical plant near that river. peter realized that the waste from the chemical plant would pollute the river. he decided to seek a legal ordinance that would restrict the use of land near that river for specific use only. which type of zoning will peter and his region?

What caused the settlement of more african americans in the mississippi alluvial plain region than in the ozark mountains point)

How did economics delay scientists' first attempts for conservation in each story? describe the political actions that led to successful conservation in both stories. i have them all done but these two. none of my teachers are responding and i just need . i can show both stories.