How did environmental factors play a role in increased migrations in this time period?.

Which is an advantage to using nonrenewable resources? a. they can be cheaper. b. they can have a lower impact on the environment. c. they can be used up rapidly. d. they can contribute to global warming.

Iknow this isn't a question, but is there someway to ask a question under public safety or is there no category for it? i don't know if i'm overlooking it or not.

To safely control the traffic flow and protect workers near public roadways and moving construction equipment use you could use