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In a sequence of rock layers we find trilobite and dinosaur fossils.The dinosaur fossils are at the bottom of the rock sequence and the trilobites are at the top.This sequence tells us that
Q40: The oldest known fossils are<br>A)trilobites and brachiopods.<br>B)algae
Q51: Regions in which earthquakes are common are
Q67: In a swell,wavelength is constant.As a swell
Q83: Explain why freezing rain is more commonly
Q85: When a funnel cloud touches the ground,it
Q100: What is the difference between intrusive and
Q105: When the mineral assemblage of a rock
Q127: Rocks altered by heat and pressure beneath
Q130: Rocks break down to form sediment via<br>A)erosion.<br>B)transportation.<br>C)sedimentation.<br>D)weathering.
Q145: The mantle is composed of<br>A)iron and nickel.<br>B)iron-rich