試題詳解

 9. What advantage does internal fertilization have compared with external fertilization?
(A) Usually a smaller number of genes are present, which promotes genetic stability.
(B) Usually many offspring are produced, ensuring survival of the species.
(C) The time and energy devoted to reproduction is decreased.
(D) The increased survival rate results in rapid population increases.
(E) The smaller number of offspring often receive a greater amount of parental protection.