Why are intertidal zones and estuaries important?

help!! :(​

Using complete sentences, describe the central economic problem facing all humans. why does this require people to make choices? how can this result in opportunity costs?

Asegment whose endpoints are points on the edge of the circle are whatps: i ment to put this under geometry i apologize ; ;

Which of the following statements best describes east asia? a. east asia is known to be the crafle of civilizationb. east asia is one of the world's most populates placesc. east asia is one of the worlds riches placesd. east asia is located near the equator me asap huhu