<span>Answer: Pond A</span>
<span>The concentration of Oxygen in water is very important in
considering the quality of water along with the other physio-chemical
characteristics. Thus, oxygen concentration is inversely proportional
to temperature and cooler water holds more oxygen compared to warm water.
However, fish usually need more oxygen in water water.</span>
In DNA methylation, the most frequently methylated nitrogenous base is the cytosine. Its methylation is widespread in prokaryotes and eukaryotes. Its rate of DNA methylation differs greatly between different species like Arabidopsis thaliana which is 8%, Physarum, 4%, Mus musculus, 2.3%, and etc.
It would be the endocrine system
B) cell because all living things are made up of cells
