Suggest a way that each farm could change their farming practices to prevent pollution of the river with nitrates. (Gizmo)

In which situations is the principle of cross-cutting relationship useful in determining relative age?

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.

What's the waste product of electrons and pyruvate combining in fermentation?