Wild Earth Avalanche - Hello Reader, Science L4 Author:Lorraine Jean Hopping The phenomenon of an avalanche can have devastating effects for unsuspecting people. Young readers will learn about the causes of an avalanche, the different components of an avalanche, how dogs help in a rescue, and many more interesting facts. Accounts of true stories and past avalanche disasters are clearly illustrated in this Level 4 Hello R... more »eader. Avalanche Safety Tips are provided at the back of the book.« less