Chapter 5 Fossils

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The half life of Carbon-14 is 5600 years. How much would be left of a 50 gram sample after 11,200 years?

A break in Earth's crust is called

The half life of Carbon-14 is 5600 years. How much would be left of a 100 gram sample after 5600 years?

A solid copy of the shape of an organism is

According to sceintists, both Earth and the moon are

Which of the following substances is not able to preserve entire organisms?

Which of the following was found in Earth's first atmosphere?

How many grams are left of a 20 gram sample of a radioactive isotope after 2 half lives?