Which of the following is a common environmental problem caused by mining? a. introduction of invasive species b. contamination of water supplies c. destabilization of earth's mantle d. formation of holes in the ozone layer

What impact did entry into ww1 have on life in the us?

Why did stalin want control of eastern europe after ww2?

Which answer best describes an advantage of shipping goods by canal? a) most towns would rather have canals then noisy railroads b) goods could travel very fast downstream in the canal system c) traveling by boat is a much more relaxing way to transport goods. d) heavy loads of goods could travel by boat more easily then if pulled by horses.