In a series of undisturbed rock layers where shale lies between sandstone below and limestone above, the a. limestone is youngest c. sandstone is youngest b. shale is youngest d. beds are all the same age

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

close lines strong magnet less close weaker