Afossil that is widespread geographically but only occurs in one or a small number of rock layers is called
a rare fossil
a marker fossil
an intrusive fossil
an index fossil

What role did the waterways of europe play in development of europe's economy

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a.light in water b.light in vacuum c.sound in air. d. sound in water

Match the following items. 1 1 (4,4) 2. (-4,-2) 3. (3.-6) 4. (-4, 6) 5. (1,5)