What is the density of a mineral? a. the mineral's mass b. the ratio of the mineral's mass to its volume c. the mineral's volume d. the ratio of the mineral's height to its weight

Which of the following is an example of a tissue on the digestive system a.the stomach b.smooth muscle that lines the stomach c.nerve cells in the stomach d. enzyme molecules in the stomach

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.

Regarding most of the narrator’s story, which word best describes the tone?