A cladogram is a branching diagram showing the cladistic relationship between a number of species
Answer:
the major factor is the decrease of deaths
I think it's D) atmospheric carbon dioxide.
I think it is their normal state
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]
