Please help, I need the answer ASAP as I'm taking a test right now. (earth science)

How many countries have portuguese as a national language?

What does 2[tex] {2}^{ - 4} \times {2}^{ - 2} [/tex]

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