demise – n. the end of something that is thought of as being like a death

game-changer – n. a newly introduced element or factor that changes an existing situation or activity in a significant way

impression - n. an idea or belief that is usually not clear or certain

predator – n. an animal that lives by killing and eating other animals; an animal that preys on other animals

pest – n. an animal or insect that causes problems for people especially by damaging crops

species – n. a group of animals or plants that are similar and can produce young animals or plants; a group of related animals or plants that is smaller than a genus