From what I have learned about stingrays... They don't exactly "sleep" But they do go in a state of awareness when they "sleep" They sleep anytime they want (its not like they can tell time lol)
The answers and explanation will be attached in the file below.
0.05 is the answer all o did was use a texas insrumants calculatorand type 5,2nd,the third row(virticly) fifth sighn and than the enter/= key
Answer:
There are many factors
Explanation:
Humans die everyday because there are 7 billion so it's bound that they die everyday. You can die from many things but since there are so many people and we have short lifespans people die very often.