D: some codons code for the same amino acid
<span>Hope this helps!</span>
There are a couple features unique to mammals, here are some:
1. Mammary Glands- evolved from modified sweats glands, these are used to create milk for offspring. Only females produce this milk.
2. Hair- this is an adaptation that provides insulation to keep the animal warm, provide protection of the skin, and sometimes camouflage the animal through the hair's color patterns.
3. Sweat glands- while being unique to mammals, they are not present in all of them. For example, whales do not have sweat glands at all because they live in the ocean!
<span>In recent years, snakes from around the world have been turning up in and around Everglades National Park. Burmese pythons, one of the largest snake species on earth, are now known to be breeding in the park and spreading throughout south Florida. Originally from southeast Asia, Burmese pythons are now frequently found in south Florida. More than 2,000 pythons have been removed from the park and surrounding areas since 2002, likely representing only a fraction of the total population.</span>
Cryptzoology is not considered a science, because some don't take it seriously, and scientists do not have a perfect explanation for it. So it is considered a psuedoscience.