In prophase 1:
Chromosomes become visible, crossing-over occurs, the nucleolus disappears, the meiotic spindle forms, and the nuclear envelope disappears.
In metaphase 1:
The pairs of chromosomes (bivalents) become arranged on the metaphase plate and are attached to the now fully formed meiotic spindle. The centrioles are at opposite poles of the cell.
Hydroelectric energy would not be a good alternative energy source for a small island country like Great Britain. The UK has a large population of about 60-65 million people and a large industrial, so electricity consumption would be a problem. A lot of hydroelectric dams would be needed to serve the large population, and UK does not have a lot of major rivers that are suitable for dams
