How many time zones are there “supposed” to be?

Agricultural practices in the united states nearly led to the extinction of the peregrine falcon during the 1950s and 60s.

Religious conflict in northern ireland started with a) cultural differences resulting from viking invasions around 800 b) england’s split from the catholic church in the 1500s c) rebellions in ireland between 1916 and 1921 d) the norman invasion of england in 1066

Which of the following is an example of relocation diffusion