Acharacteristic of some organisms that are uninjured or unaffected by a certain dosage of pesticide chemical used to successfully control other populations of the same organism. also, plants and/or animals that are unaffected by a pest species

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.