Can someone help me with this question? Name two specific events in meiosis that help to create genetic variability in gametes. Explain on how these two events produce genetic variability.​

poor water quality affects most estuarine organisms, including commercially important fish and shellfish. the pollutants that have the greatest impact on the health of estuaries include toxic substances like chemicals and heavy metals, nutrient pollution (or eutrophication), and pathogens such as bacteria or viruses.

the correct answer is b

if someone had the list of traits you provided

a bird that nests only in a particular tree species.