Apigeon is presented with a blue key and a red key in alternating order. in the presence of the blue key, it earns food on a vi 200-sec schedule. in the presence of the red key, it earns food on a vi 600-sec schedule. the vi 600-sec schedule is then changed to a vi 100-sec schedule. as a result, rate of response on the vi 200-sec schedule will which is known as a(n) contrast effect. a. increase; negative b. decrease; positive c. increase; positive d. decrease; negative

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?

what are the options? add them, then i will be glad to .