The stimulus controlling the operant response is called a stimulus. For example, students do not learn simply when material is set in front of them. Instead, the material sets the occasion for learning to occur.

Christie's doctor recommends that she eat 40 grams of protein a day. she's already consumed 50% of her protein recommendation for the day. how many servings of the given snack should christie have to meet her daily protein recommendation?

What is the most appropriate method of gaining weight (muscle mass)

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion