Ques: If male dogs use chemicals in urine to mark their territory, then what uses chemicals in urine to mark their territory? Answer choices: - rabbit - bears - viruses - male dogs - alpacas - athletes - humans - bacteria
Ans: male dogs

Ques: If threatening behavior can be painful, then what can threatening behavior be? Answer choices: - opossums - painful - imbalanced - tiny - threatened - smoking - comprehensive - funny
Ans: painful

Ques: If mammal hearts have two more sections than fish hearts, then how many sections does a fish heart have? Answer choices: - ovum - fat - four - p53 - two - cut - bone - stem
Ans: two

Ques: If penguins are endothermic tetrapod vertebrates, then what are endothermic tetrapod vertebrates? Answer choices: - mammals - clouds - humans - penguins - jellyfish - warm-blooded - fur and fat - animals
Ans:
penguins