Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Are humans a new or old species on the earth?
Are humans a new or old species on the earth?

Solid is characterized by molecules with minimal movement and strong forces between them.
Which state of matter is characterized by molecules with minimal movement and strong forces between them?

An increase in the body's cholesterol levels can lead to your arteries filling with plaque.
An increase in the body's cholesterol levels can lead to your arteries filling with what?