3. extend your thinking: in living organisms, the cell cycle is closely regulated. what do you
think will happen if cell division is not controlled?
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answer: a. a gene that causes a specific trait.

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.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;