After the French and Indian War, why were British troops stationed in the American colonies?

In the mid 1800s western settlers and american indians differed in their views about

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?

Experiment to investigate effect of medication on levels of stress in males and females. dependant variable?