Answer:
There is 50 chance because there are two chromosomes that are same and two which are difeerent . XX MEANs girl XY means boys .
252 Ma<span> (million years)
Please give brainliest
</span>
Melanin provides pigmentation to the skin and it also provides UV ray protection (which is its role in the epidermis).
Answer:
According to the BBC, Saber-tooth cats went extinct roughly 10,000 years ago and it is suggested that their closest living relative might not be the tiger or the lion, but the clouded leopard. The saber-toothed salmon is another animal that is extinct but there are some still alive today: walrus; musk deer and warthogs.
Explanation:
The greatest threats to coral reefs is the rising temperature of the oceans as a result of climate change and the acidification of the oceans due to increased levels of carbon dioxide in the atmosphere which dissolves in the ocean and forms carbonic acid.Aug 3, 2015
