Carefully analyze the diagram below. It shows the relative number of species in four groups of vertebrates over time. The thickness of each band shows the relative number of species in that group.

1.) Which of the groups shown has the greatest number of species today?

2.) which group experienced a significant decline in biodiversity at the end of the Mesozoic Era? *

Match each description with the correct form of energy. 1. energy of an object's position above the ground. 2. stored in the bonds of atoms and molecules 3. stored in the nucleus of an atom 4. energy of vibrating molecules 5. movement of objects used to do work 6. created by vibrations in electric and magnetic fields chemical energy mechanical energy heat gravitational energy light nuclear energy