There are different types of waste such as carbon dioxide and that must be removed. If they are allowed to accumulate they can and will cause poisoning which slows down vital chemical reactions. When excretory organs such as your kidney's are damaged, the organism quickly displays symptoms of poisoning and death is rapid unless treated immediately.
Robert Hooke discovered Nucleus in the cell !!
So, C is the most appropriate answer !! as nucleus contains genetic material and is passed to daughter cells !!
Since guanine - cytosine and adenine - thymine are are always paired in the DNA, the amount of cytosine is approximately the same as guanine and the amount of thymine is approximately the same as adenine
The most well known answer according to my bio teacher is nitrogen
They are the same thing, but there's also carbon dioxide in the ocean, dissolved as carbonic acid. Carbon dioxide literally means one carbon, two oxygens. CO2.
