Use the following to answer questions:
Figure: MSB and MSC of Pollution 
-(Figure: MSB and MSC of Pollution) Look at the figure MSB and MSC of Pollution. What level of pollution represents the socially optimal level?
Definitions:
Zygotes
The initial cell that forms when a sperm cell fertilizes an egg cell, marking the start of human development.
Ovum
The female reproductive cell or gamete in animals, also referred to as an egg cell, that can develop into a new individual following fertilization.
Sperm
Male reproductive cells or gametes in sexually reproducing organisms, involved in fertilizing the ovum to initiate pregnancy.
Chromosomes
Thread-like structures located inside the nucleus of animal and plant cells, made of protein and a single molecule of deoxyribonucleic acid (DNA), responsible for carrying genetic information.
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