Which statement is an example of an observation a scientist would make to classify a rock? A rock is larger than other rocks. A rock was found in a stream. A rock is formed from molten lava. A rock cracks in half after a rainstorm.

Where does the availability of water pose the greatest problem

Which was not a country that massively built up its navy in the early 1900s? germany china united statesbritain

Which events occurred during the space race? check all that apply. (a) nasa was established. (b) yuri gagarin orbited earth. (c) the soviet union launched salyut. (d) the united states launched skylab. (e) the united states launched explorer 1.