Two plates are descending (going under) the plate.

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?

5. there were nearly 1,000 pirate attacks between 1994 and 2005 off the coast of according to the international maritime bureau's annual piracy report for 2005.

Based on current rates the earths human population is expected to grow how much by 2050