State the difference between the reproductive cycles of flowering plants and rockweeds. Specify for each stage the number of chromosomes (2n-diploid, or n-haploid).

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.