Hello! Are you sure you meant 400 cm long? or mi?
Population density is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density. It is frequently applied to living organisms, most of the time to humans. It is a key geographical term. Hope this answered your question
Gypsum is a chemical sedimentary rock.
Answer:
It includes three main layers: crust, mantle and core.
Explanation:
Explanation:
Air pressure
Measured using a tool called anemometer which looks like a wind vane.
