sludge
<span>Sewage treatment is also known as wastewater treatment. It is
a process whereby contaminant is removed from wastewater. Thus, chemical,
biological and physical process are commonly used to remove contaminants from
wastewater and the by-products of wastewater treatment is usually inform of
solid waste known as sewage sludge.</span>
Tall parents can have a short child, short parents can have a tall child , and two parents of the same height may have a child in between?
Where are the many similarities..?
Coal, Natural Gas, and Putroleeum?oil
Answer:
Explanation:
Student A because it requires a hypothesis