The valleys around the Nile, Euphrates, and Tigris Rivers were probably

A.

where the first farmers settled.

B.

the location of a major battle between Egyptians and Sumerians.

C.

a glacier in ancient times.

D.

first discovered during the 1700s.

Continental crust Choose one: A. is less dense than oceanic crust. B. makes up about 80% of the Earth's surface. C. is less buoyant than oceanic crust. D. is thinner than oceanic crust.

Why are stars and solar systems separated in the diagram below? Galaxies are made up of some stars that have objects orbiting them and some stars that do not. Stars describe the star itself and solar systems describe the orbiting objects.

The animation shows that at any location observable from the geostationary satellite, the solar energy arriving on Earth is ___.

What evidence did Wegener make use of to develop the theory of continental drift? A. Similar fossils were found on different continents. B. The climate of Siberia has always been the same. C.

In 1990, world rice production was 350 million tons. in 1999 it had risen to 400 million tons. what was the percentage increase in world rice production between 1990 and 1999?

How do i write 4 2/3 as a fraction greater than 1

The greatest temperature ranges in the region, due to the effect of continentality, are experienced in?

Question 1 Why can't Mars have liquid water? Why can't Venus?

Which of the following is not a convergent boundary A. Continental Volcanic B., Oceanic Oceanic C. Continental Continental D. Oceanic Continental

Which of the item (s) below are true about acid rain? 1. Acid rain affects our health. 2. Acid rain increases precipitation. 3. Acid rain increases the world's food supply. 4. Acid rain is of greater concern in more-developed countries. 5.