Ques: Fact 1: Male dogs use pheromones in urine to mark their territory. Fact 2: Pheromones are chemicals produced by insects to communicate. Given the two facts above, answer the question "What uses chemicals in urine to mark their territory?" with the following options: - rabbit - bears - viruses - male dogs - alpacas - athletes - humans - bacteria
Ans: male dogs

Ques: Fact 1: Threatening behavior by predators causes a porcupine to extend its quills. Fact 2: Porcupine quills can be extraordinarily painful. Given the two facts above, answer the question "What can threatening behavior be?" with the following options: - opossums - painful - imbalanced - tiny - threatened - smoking - comprehensive - funny
Ans: painful

Ques: Fact 1: Fish have a circulatory system with a two-chambered heart. Fact 2: Mammals have a four-chambered heart. Given the two facts above, answer the question "How many sections does a fish heart have?" with the following options: - ovum - fat - four - p53 - two - cut - bone - stem
Ans: two

Ques: Fact 1: Birds are endothermic tetrapod vertebrates. Fact 2: Penguins are a type of birds. Given the two facts above, answer the question "what are endothermic tetrapod vertebrates?" with the following options: - mammals - clouds - humans - penguins - jellyfish - warm-blooded - fur and fat - animals
Ans:
penguins