Answer:
B. more soldies who had lost a limb returned home
Binary fission is most likely to occur in bacteria, and some fungi, they reproduce by budding, which is just like binary fission, but note that not all fungi do this. but yes, bacteria reproduce by binary fission, a cell division for sure.
Answer:
I think yes, humans are an invasive species.
Explantation:
I think humans are an invasive species because they are everywhere, and very few places in the world do not have humans. Humans are in control of the planet because of their number. Humans are not going to be extinct ever. They are always going to be here on earth. If somebody finds new land, they make a base/camp and send other people to live there and to populate it. Like in North america, settlers came and sent men to live there. They hunted animals and set up homes. Then, more and more people came and soon all that is left is a over populated land with citys and cars and humans everywhere.
I hope this helps. :)