Answer:
Point-source pollutants.
Explanation:
Point-source pollutants are emitted from single identifiable sources. For instance, untreated waste water from a particular oil refinery or factory is a point-source pollutant.
This happens during metaphase. I remember this phase because it is the move phase
of mitosis. The m from move matches the m from metaphase.
In mitosis, it happens during metaphase.
In meiosis, it happens twice and occurs in metaphase 1 and metaphase 2
