Which of the following mutations is LEAST likely to result in harmful changes to cells?

7th grade question (easy) look at the diagram of the food web. the arrows mean eaten by. what would happen if the number of snakes went down? answer choices are in the image.

How are fossils used to date organisms?

We all have different forms of genes from our parent(s).what are these different forms called? a.alleles b.characters c.dna d.resources