Why the energy of the product might be lower than the energy of the reactants

If someone could do the first couple, just so i can see how it's done that would be great! 20 points. complete a dichotomous key for the 10 leaves on the common leaves sheet. the chart provided here allows for 11 pairs of statements. depending on how you build your dichotomous key, you may or may not need all of them, or you may need to add some.

Why would a drug the damages capsids treat a viral infection

What organelle other than the nucleus houses dna in a eukaryotic cell?