2. During Earth's very early history, our planet was whacked by meteorites large and small, and eventually grew to its current size. Earth probably went through a period in which it was molten from near the surface to its center.
Throughout its history, Earth has been hotter at its center than at its outer surface.
(a) In caves just below Earth's ground surface in continental crust, the temperature tends to be a constant
-15°C (-59°F). (That's why people use caves for wine storage.) The deepest mine on Earth is currently the Mponeg
gold mine just southwest of Johannesburg, South Africa, which reaches just over 4 km below the surface. At the
bottom of that mine, the rock temperature reaches 66°C (-151°F). Using the cave temperature to represent the
surface temperature of the crust at -0 km depth, what is the rate at which temperature changes in Earth between
O and 4 km-the near-surface geothermal gradient?
°C/km

1. in 1492, spain expelled after being under their rule for centuries. a. the portuguese b. the basques c. the castilians d. the moors 2. an important cultural center during the renaissance was the city of a. milan b. bologna c. florence d. naples 3. what is the connection between the minoan civilization and a volcanic eruption on thera? a. the earthquake happened a century before the collapse of the civilization. b. the earthquake created a graben. c. the earthquake caused the collapse of the civilization. d. the earthquake caused a volcanic eruption. 4. throughout history, other cultures influenced greece through a. military conquest b. shared ideals c. trade agreements 5. geographically, spain is isolated from the rest of europe by a. portugal b. the atlantic ocean c. the pyrenees mountains d. narrow coastal plains 6. most of central spain is known as the meseta, which is the spanish word for a. mountains b. plateau c. peninsula d. plains 7. for the people of ancient greece, the  iliad, and the  odyssey  a. copied western ideals b. were not popular c. presented community standards d. were children’s poems\ 8. western cultures got many of their ideas about from ancient greece. a. warfare b. democracy c. education d. agriculture 9. how is greece’s natural vegetation similar to that of other mediterranean countries? a. it has been damaged by forest fires. b. it is mainly deciduous forests. c. it grows rapidly in the wet climate. d. it has been reduced to scrub vegetation by overgrazing. 10. what is the most productive agricultural area in italy? a. the alps b. the po valley c. southern italy d. the apennines 11. many factories in northern italy use for energy. a. coal b. hydroelectricity c. nuclear energy d. natural gas 12. what major landform covers much of italy? a. the apennines b. the po river valley c. the alps

What are mountains that divide european russia from asian russia?

In 1914, the philippines was under the control of which