Earth

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

More Questions from Earth
What front results when a cold front takes the area of a warm front?
Reveal Answer
What is a Herkimer diamond?
Reveal Answer
What kind of rain is bad for the environment?
Reveal Answer
What percentage of known volcanoes are subaerial, meaning they erupt into the atmosphere?
Reveal Answer
People who inhabit earth are known as...?
Reveal Answer
A "gustnado" is a gust from what?
Reveal Answer
Where do hurricanes form?
Reveal Answer
What produces more energy than all the world's nuclear weapons combined?
Reveal Answer