I believe the nuclear membrane
Because all living things are made of carbon in one way or another and we use nitrogen and water naturally.
The answer is B
topsoil<span>. The potting soil</span>, is use for cultivating floors, grasses and
vegetables in a handle or container. <span>The potting soil</span><span> available in trades is sterilized in order to avoid
the spread of bad grasses and diseases transmitted by the plants.</span>
It should be
AGATACCATGGTTACCCGGTTCCA