There are some things that can prevent decay, one if them is ice, an example of that is a frozen mammoth, ice can prevent the body from decaying, another thing is amber, it can trap an insect and prevent it from decaying, lastly there is tar, a substance that covers thing in a black substance that prevents it from decaying.
In a survey, it says that human's DNA are 99% the same.
Hope this helps! :)
Answer:
Crocodiles are actually the closest living relatives to birds
