_________ was an ethologist.
A) Ivan Pavlov
B) Carl Jung
C) Sigmund Freud
D) Konrad Lorenz
Question 2
Which of the following statements is true of traditional methods of treating cancer?
A) They use only surgery to remove cancerous tissues.
B) They strengthen the immune system.
C) They have side effects such as nausea and loss of appetite.
D) They destroy only malignant cancerous tissues.