Plants did all of these, but they did the minimal amount necessary for them to survive. We can use existing plants as a huge library to mix and match behavior t

Plants did all of these, but they did the minimal amount necessary for them to survive. We can use existing plants as a huge library to mix and match behavior to get what we need. Unfortunately "just replacing" won't produce a very good results, as in many places normal forests won't survive, and in many other places they won't produce enough food compared ti single crop fields. But with gene engineering we can change that.