Groundwater collects underground in layers rock or soil called what? i think it's layers but i don't for

What role did the waterways of europe play in development of europe's economy

In a short paragraph, describe your hometown in terms of its population and impact. do you live in a town or a city? is your home a higher-order or lower-order settlement? how does your hometown interact with other towns in its region? (houston)

Advantages and disadvantages of mitigation and adaptation