Question

tunnels are built over rivers write true or false​

Answer 1

Answer:

True

Explanation:

To use this method, builders dig a trench in the riverbed or ocean floor. They then sink pre-made steel or concrete tubes in the trench. After the tubes are covered with a thick layer of rock, workers connect the sections of tubes and pump out any remaining water.

Answer 2

Answer:

true is the right answer thank you