Q: You are presented with the quiz "poisonous substances can cause what to come to living things"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "insect bites cause harm to living things" and "insect bites are another source of poisoning".   So, what's the best answer to the question?

Choose from:
+ health;
+ higher nitrogen;
+ cancer;
+ Injury;
+ toxins;
+ death;
+ cell growth;
+ harm;
A:
harm