Could the loss of 4% of the cerebral cortex cause the behavior changes noted in Phineas Gage?

Yes

Explanation:

The frontal lobe is the part of the brain that controls personality, decision-making and reasoning. It is a part of the cerebral cortex and the largest in composition.

Phineas Gage was involved in an accident in which a metal rod destroyed parts of his brain. This incident however brought about a drastic change in his behavior.

This incident helped to establish the relationship between the frontal lobe and behavioral patterns.

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.