Đăng bởi Hoàng Oanh
"vi-tri-dac-biet-tren-ban-cau"
"diem-cuc-nam-mui-hao-vong"
"sa-mac-sahara"
"rung-nhiet-doi-congo"
"he-thong-song-lon-o-chau-phi"
"anh-huong-cua-vi-tri-dia-ly"
"da-dang-sinh-hoc-o-chau-phi"