1 | It covers 965 populations of 365 species, representing 35 percent of all known vertebrate species found in the Arctic. | |
2 | They have no direct toxic effects on vertebrates. | |
3 | China has the world's largest number of terrestial vertebrates, with a total of 1,800 species, which accounts for approximately one-tenth of the same species of vertebrates in the world. | |
4 | But how do they - and the other 70 species of vertebrates that propagate this way - do it without the genetic monotony and disease vulnerability that often results from asexual reproduction? | |
5 | And because of their size and few predators, whales and other big marine vertebrates can efficiently export carbon from the surface waters to the deep sea. |