Analyze the map above. What is one physical geographical feature that might obstruct settlers moving west?

What is the amount of organic matter in all living organisms in a habitat called?

According to the article about the zhou dynasty, this dynasty was broken into different eras because its capital changed from place to place. how many different eras were there in the zhou dynasty? a. two b. six c. ten d. fourteen

The purple arrow on the map above is pointing to the an important line of latitude. a. tropic of capricorn b. equator c. international date line d. prime meridian