12. Which of the following provides the best evidence of a biodiversity crisis? (A) the incursion of a non-native species. (B) increasing pollution levels. (C) decrease in regional productivity. (D) high rate of extinction. (E) climate change.
6. 以下哪項是生物多樣性危機最佳的證據? (A)非本地物種的入侵 (B)增加..-阿摩線上測驗