By pairing the ringing of a bell with the presentation of meat, the russian physiologist trained dogs to salivate at the sound of a bell even when no meat was presented.

What is a self-improvement strategy for a parent with a busy schedule? a. spend more time watching exercise shows on tv. b. start exercising when the kids are grown. c. use a calendar to plan daily exercise. d. write in a journal about the importance of exercise.

Which question should you ask to evaluate the credibility of health information? a.) does the article contain illustrations? b.) is the information up to date? c.) is the information available online? d.) is the information written in the united states?

Ingredients used in tobacco products been banned?