100篇写作范文
The current global extinction crisis is one of the greatest challenges posed by the rapid expansion of human populations. The protection of endangered species, as far as I can see, should be a top priority for three main reasons: economic value, scientific value, and survival value.
The current global extinction crisis is one of the greatest challenges posed by the rapid expansion of human populations. The protection of endangered species, as far as I can see, should be a top priority for three main reasons: economic value, scientific value, and survival value.