extinction – n. when a plant or animal completely dies out and disappears

scale – n. a thin, hard plate of material that covers the bodies of some animals

veterinarian – n. a person who is trained to give medical care to animals

compromise – v. damaged or weakened

pitiful – adj. deserving or causing a feeling of pity or sympathy

intravenous – adj. through or into the veins

trend – n. the general direction of change

pose – v. to pretend to be something that you are not