Recessive alleles may not be expressed because they are

not as strong/dominent/common/potent/other words like that as dominent alleles. Didn't know how else to answer. Hope this helps.

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.