Why would understanding the current climate and the prehistoric climate of fossils be important to the idea of continental drift?

What event was one of the greatest factors that led to massive emigration from ireland to the united states in the mid—1800s

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?

Which of the following policies can the government use to encourage entrepreneurship?