That is true, species can breed within
It could be xenon, enon is a chemical element with the symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas found in Earth's atmosphere in trace amounts.[11] Although generally unreactive, xenon can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized.[12][13][14]
Answer:inhibit pacemaker potential
Explanation:
Nonrandom mating-inbreeding or genetic drift
3 is the sun i just took the test and that was the correct answer
