Về điều kiện tự nhiên , kinh tế xã hội nước ta có thuận lợi khó khăn gì đối với ngành thủy sản nước ta ?

Jennifer is visiting her grandmother, who lives in the northeast corner of oklahoma. the region is home to many lakes, and jennifer enjoys canoeing on the illinois and grand rivers. to which region of oklahoma is she traveling? the prairie plains, the ozark plateau, the red river plains, the red beds plains

The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called

How many time zone are there on earth