Question

The article says that paleontology was a young science in the United States in the mid-1800s.

How knowledgeable about the field were paleontologists of the time?

Answer 1

Mass is a measure of the amount of matter in an object. Mass is usually measured in grams (g) or kilograms (kg). ... An object's mass is constant in all circumstances; contrast this with its weight, a force that depends on gravity. Your mass on the earth and the moon are identical.