Which of the following is a common feature of ancient roman buildings

A. roofs with upturned ends

B. towers with spires

C. rounded arches

D. onion domes

Which type of rock is especially likely to form caves? A. limestone B. claystone C. dolostone D. sandstone

The high abundance of iron on the surface of mars is indicative of what difference between earth and mars?

The african sahel probably did not become a corridor of communication comparable to the eurasian steppe because of its

Which small inland body of water lies on the edge of the Syrian Desert

What causes molecules to stick together in liquid water

What environmental problem results from draining oil that had been underground? A:subsidence B:channels C:processing D:conservation

Why does north Korea think they are superior

The northern portion of Canada is covered by boreal forests which are characterized by

Eventually became the capital of Russia

Which type of earth scientist was most receptive to Wegener's ideas? A. Seismologists (earthquakes and deep earth) B. Petrologists (igneous rocks) C. Geomorphologists (landscape shapes) D. Paleontologists (fossil organisms)