Which two images show naturally-occurring physical hazards or contaminants?

How is the motion of the particles of water at 80 ⁰c different from the motion of the particles of water when it is 30 ⁰c?

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.