What uses the age of layers to figure out how old something is?
O A. Precambrian dating
O B. Radiometric dating
C. Relative dating
O D. Mesozoic dating

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.

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping