What conditions prevent trees from growing in the tundra?

What is the difference in electronegativity between chemical bonds in diamond (C) ? Are these bonds ionic or covalent?

Which hemisphere has the most major cites?

Which one of the following statements relate to climate as opposed to weather? Select one: a) Last winter was the coldest I can remember b) The first two months of 2013 were very wet c) We've now had five days in a row above 40C d) June is the

What 2 major landforms separate western europe from mediterranean europe?

What other states might have sediments from the Appachian Mountain

Igneous rocks are made mainly of compounds of: carbon and hydrogen silicon and oxygen carbon and silicon carbon and oxygen

Which volcanoes in the world are located along converging plate boundaries

What was the capital city of the eastern Roman Empire

How does geography relate to land bridge

What is the largest religiois group in russia and the western republics