Nearsightedness occurs when the eyeball is too short.

What is the most likely causative association between malaria and sickle cell trait?

a. Sickle gene makes people more prone to malaria infection. b. Sickle gene prevents Plasmodium ovale infection. c. They are both found in Asia. d. Sickle gene offers some protection against malaria.

Amalgam restorations are the least common and most difficult to recognize on dental radiographs

Indicate whether the statement is true or false