What is it called when the amount of the moons lighted surface seen on earth increases

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

The desert expands by hundreds of square miles each year.

Identify the type of weathering seen in each picture ? chemical weathering mechanical weathering