Please help ASAP Which physical feature borders the Ridge and Valley region?

a continuous ridge
a continuous river
a fault system
a low valley

The lifeguard at the local beach record the tides each day the chart below shows the high and low tides over two days

How did the end of the mexican american war result in growing sectionalism in the united states?

Kate is 14 years old and just started taking dance classes with her friends at a local dance studio. this is her first time in a dance program, so everything is new to her. her friends convinced her to join the class since they have been enjoying it for a few months. how could the following terms her succeed in the dance class? ● secondary reinforcement ● identity vs. role confusion ● observational learning how could the following terms hinder her success in the class? ● circadian rhythm ● basal ganglia ● vestibular sense