If a strand of DNA has 20% C, calculate the percentages of
G:
T:
A

G would be 20%

T and A then would make up 60% so 30% each

Explanation:

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.

b is the correct answer