Evolutionists do not use the terms micro- or macro-evolution! It is the same process. As for how structures arise (evidently one definition of "macro" evolution) they are modifications of existing structures. The eye is a modification of light-sensitive skin; the leg is a modification of a fin, which is a modification of muscle and bone tissue already present; bones are a modification of cartilage which is a modification of connective tissues, which are a modification of other tissues.
We have fossils showing the transitions from fish-to-amphibian-reptile-mammal, and from reptile-dinosaur-bird. In these fossils you can see the modifications of pre-existing structures. VadeRetro has posted the series showing the modification of the jaw bones of reptiles to be ear bones of mammals.
No organs or other systems spring full-blown over night. No evolutionist ever says they did. Neither does any evolutionist draw a distinction between micro- and macro-evolution. They are both the same phenomenon, with difference between "kinds" (whatever they are) arising out of the gradual genetic drift of species -- as each species moves farther from any others genetically, it takes on characteristics not shared by any of the others. Over countless generations these characteristics add up, making the critter not resemble some of its predecessors or their offspring.
Now, we've showed you what the fossil record shows. We've backed that up by observation. There are several recorded instances of speciation in our own historical times, as has been posted here time and again. We've run a thread on one observed mechanism for adding information to the genome -- that population of monkeys which has a duplicate gene in their genome that is slowly modifying into some other use. Believe it or not, scientists do not pull these things out of the air. If they did, they'd be laughed at by their more serious colleagues.
Couple things. Here the response is so? You know what he means. He means natural selection for micro and initial origens of life and speciation for macro.
Don't proselytize, address the topic he brings up.
VadeRetro has posted the series showing the modification of the jaw bones of reptiles to be ear bones of mammals.
Stuff like this is one of the reasosn people are quite rightly skeptical of evolution. So much of it has been junk science. (Ontogeny recapitulates phylogeny -- not even logical).
The behavior of the religious evolutionists is quite apalling as well and turns people off to the subject as well and harms the reputation of science.
It is unfortunate these religious fanatics have tried to hijack science.