A doctor treats a patient with a skin condition with different creams to see which is most effective. What is the independent variable? 1. Skin Creams
2. Skin Conditions

What causes darkening of the skin as melanin production increases

Eutrophication caused by human nutrient pollution.

Label the steps for protein synthesis in order, beginning with the first steponce the protein is made, the gene for a particular trait is expressedmrna joins the ribosome, and the anticodons from trna join mrna to form a chain ofamino acidsrna polymerase unzips dna and free rna nucleotides join dna to form mrnav a chain of amino acids is formed from peptide bonds, creating a proteinmrna is transported from the nucleus of the cell to the ribosomes of the cell.