Training a dog to respond to the word "good" as a conditioned reinforcer is accomplished by saying "good"
a. at the same time as presenting a piece of food.
b. immediately after presenting a piece of food.
c. just before presenting a piece of food.
d. repeatedly while using a clicker.

genetic variation will increase because of a new habitat and food source.

explanation:

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called