1. the element bromine can cause a genetic change, so bromine is called a _
2. harvesting _ stem cells from a willing donor is not as controversial as harvesting techniques that involve the destruction of an embryo
3. complex carbohydrates are to monosaccharides as polymers are to _

the missing space is phylum

linnaeus is the father of taxonomy

explanation:

which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.