One challenge faced by people living in mexico’s heartland region is

What's responsible for eutrophication in seawater? a. deposition of sediments on shorelinesb. groundwater infiltrationc. seafloor spreadingd. runoff of artificial fertilizers

Stars and celestial bodies are a. cellestial bodies that emit light/ object that form part of the universe b. rock/ little planets c. bodies that emits/ galaxies

Match the following items. 1. queen isabella of spain paid for him to sail west to reach the far east equator 2. largest ocean hemisphere 3. ocean around the north pole mir 4. russian space station vasco da gama 5. imaginary line around the middle of the earth pacific 6. first to sail from portugal, around africa, to india arctic 7. florida, a piece of land almost surrounded by water spice islands 8. an imaginary line through the earth around which the earth turns columbus 9. half of sphere peninsula 10. europeans 500 years ago wanted to find an all-water route to this place axis