The answer is true. It is because the activated sludge
process made use of the aeration in which air being mixed with a substance
together with a bacteria and protozoa that is in a biological floc that will
help treat the wastewater.
No, polar bears does not migrate.
<span>There are two major theories that will explain on research on colour vision. They are 1. the trichromatic theory also known as the Young-Helmholtz theory 2. opponent-process theory. These two theories explain processes that operate at different levels of the visual system.</span>
A salt or ester of phosphoric acid, containing PO43− or a related anion or a group such as —OPO(OH)2.
brain or nervous system cells are called as neurons
