The Bible declares [10 times in Genesis chapter 1] that everything created by God was given power to reproduce its own kind. No one thing could break this law and produce any other kind [Gen.1:20-28]. 1656 years later it had not been broken [Gen.7:14], after more than 6,000 years the law of reproduction is still unbroken. The sponge is still a sponge and has not become an oyster, octopus, a turtle, frog, fish, or crab. None of these have ever reproduced anything except their own kind. No spider, tarantula, scorpion, lizard, tortoise, snake, or crocodile. No lowly earth-worm has ever changed from its own kind or reproduced another kind which was fertile and could produce a new kind. No monkey has ever produced a man and the missing-link is still missing.