What is a polder?

a farm surrounded by canals

a windmill that powers water pumps

a system of "dìkes" to hold back seawater

a piece of land reclaimed from the sea

Which of the following describes what rocks usually are composed of ,

What forms of energy are involved when snow on a mountain breaks loose, resulting in an avalanche? during an avalanche, the( 1 ) energy of the snow on the mountain is converted into ( 2 ) energy as the snow cascades down. ( 1 ) a. elastic b. kinetic c. potential d. radiant ( 2 ) a. chemical b. kinetic c. nuclear d. potential

Name the river that forms a natural border between new york and new jersey and is the site where a passenger jet made a miraculous landing on january 15