Which is the best example of the concept of heredity? a. a black cat blends into its environment at night. b. a baby has his mother's hair and eye color. c. as a barnacle grows, it gets calcium for its shell from seawater. d. the sunflower will move so its flower head is always facing the sun.

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom