The severity level of an average pollution-related case of CB (relative to that of the case described by Viscusi, et al.).
Pollution related case of CB and it's severity level.
All pollution-related cases, especially those regarding CB, are relative to no other cases.
The two sat quietly together.
One woman laughing.
A person surfing.
The woman is walking on snowshoes.
The effect was first noticed in the 18th century.
The woman is juggling chainsawas.