I aim to learn Biology on my own and am going to buy a textbook to study. I have heard this is the best. If the differences are slight, I would be able to save quite a bit of money in buying an older edition. What are the differences and are they really worth the more expensive newest edition?
7th and 8th are virtually indistinguishable, the alterations were mostly in the organization of the textbook. With that in mind, we can infer that 6 probably isn