1. which of the following is the most effective way to preserve biodiversity?
a.) captive breeding
b.) habitat destruction
c.) habitat preservation
d.) habitat fragmentation

Hydrogen has only one electron in its only (and outer) electron shell. if a hydrogen atom were to absorb a small amount of energy, where would bohr say the electron would go? a. fly off the atom b. nowhere, it would just speed up. c. spiral inwards towards the nucleus d. move up to another shell that would form