You are presented with the quiz "What must an animal find to ensure survival?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "an animal needs to attract a mate to reproduce" and "every member of every species needs to meet the challenges of survival and of reproduction".   So, what's the best answer to the question?

 1). disaster 2). warmth 3). food 4). space 5). predators 6). smell 7). mate 8). DNA
Answer: