How can the comparative planetology rules be applied to extra solar worlds

Maria is going to a hiking trip this weekend. she has been busy shopping for the trip. which of these items that she bought are a want for her?

What id the primary human cause of the global warming a. storage of nuclear fuel rods b. burning of fossil fuels c. building of high-density housing d. violent conflicts over natural resources

Aside from english, what other language is widely spoken in canada?