About how thick is the atmosphere

A - 6km

B - 12km

C - 500m

D - 20Okm

A large planet sized object collided with earth 4.5 billion years ago and formed what

Before world war 1 which countries in the region were under British control?

Eriq, a chemist, is running tests with four unknown elements. He has found that they all bond the same way, so he knows that they are in the same group on the periodic table of elements. The table shows other properties that Eriq observed.

During which season is the sun lowest in the sky? (This is science.)

Which of the following is an example of artificial selection?

All of the following are examples of thematic maps except:

Which is used by scientists as evidence that Earth's inner core is solid? O A. S waves cannot travel through the inner core, creating a shadow zone. O B. Seismic waves change speed when they go from the inner core to the outer core. O C.

What role did geography play in the early African kingdoms? Volcanic eruptions scared away attackers. Mineral deposits brought wealth and power. The Great Rift separated them from the continent. Tropical storms extended the growing season.

Which of the following statement is most accurate

Which country has the largest salt flats in the world