Why did early settlements first develop along rivers? people could mine for copper and gold. people could use tools to dig ditches. plants and animals were more abundant. floods provided water for crops?

What ways are gabbro and basalt different? What can you infer from this about how these two kinds of igneous rocks form?

What is the process called when a lithospheric plate descends into the mantle? Continental drift Induction Seafloor spreading Subduction

Suppose a star has the same luminosity as our sun (3.8*1026watts) but is located at a distance of 10 light-years. what is its apparent brightness?

What first caused people to consider that the continents were once one large landmass?

Which two statements best describe how oceans affect climate?

Total land mass area of europe in square kilometres

The population density of the Philippines is 798 people per square mile. If many refuges arrive from a neighboring country how will they affect the population density? O A. Cannot be determined. O B. The population density will decrease. C.

Select all of the true statements about deep ocean currents. A. They form gyres. B. They transport heat across Earth's surface. C. They are known as "thermohaline circulation." D. They are caused by wind and Earth's rotation. E.

What is the difference between emigrate and immigrate?

What is the difference between high concentration and low concentration