I think it's a hypothesis.(;
Animals and plants are associated with both divisions and phyla
As kingdom grows the more species are in the classifying group.
<span>And since there are only a number of kingdom and thousand species, it would account that species changes more rapidly and exponentially grows than kingdoms.</span>
Answer:
Shark skin has been used by many cultures as sandpaper. It's kept shipmates safe in slippery-when-wet conditions. Swimsuits modeled on shark skin are said by Speedo to reduce drag by up to 4 percent. Now, research by two separate groups could lead to synthetic shark skin that would make ships and submarines faster and less expensive to operate.
