Earth

What is the name given to a fossil that best defines a rock layer's age?

More Questions from Earth
What type of glaciers fill up the gaps between mountains?
Reveal Answer
What kind of waves does an earthquake produce?
Reveal Answer
Where would you take cover from a tornado?
Reveal Answer
What type of energy sources can't be replaced readily within a 30-year span?
Reveal Answer
What is the name of the galaxy in which the Earth exists?
Reveal Answer
What type of boundary is displayed at the Mid-Atlantic Ridge?
Reveal Answer
One needs to travel to which state in New England to see the highest tides?
Reveal Answer
What is the Hawaiian name for smooth-flowing basaltic lava, often appearing twisted and rope-like?
Reveal Answer