How do frogs sleep at night

Which of the following was a goal of european conservation in the early 1800

Concentration camps built by nazis in 1933 initially held

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.