Căn cứ vào Atlat địa lí Việt Nam trang 10, cho biết cửa Đại thuộc hệ thống sông nào sau đây?

1. antarctica2. saudi arabia

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.

Answeraquifer;