(a) Magellan's ships set sail with basic foods that provided a balanced diet.
What is meant by a balanced diet?
(b) Suggest why Magellan took some live animals with him on the voyage.
(c) Most of the sailors on the Victoria developed a deficiency disease called scurvy.
(I) What is meant by a deficiency disease?
(lI) Describe one symptom of scurvy.
(IlI) What is the cause of scurvy?
(iv) Suggest why Elcaro did not develop this deficiency disease.