A) One species always outcompetes the other until only one species remains.
Hydrogen ion, or H-, creates water when combined with a hydroxide ion, OH+.
The 'formula' for water is H20, two hydrogens and an oxygen.
I hope that I helped but if this still makes no sense, or if I haven't explained it as well, then please don't hesitate to ask further questions. Thank you.
The choice that isn’t an adaption is choice D because although having a moisture-rich diet is essential for birds, it isn’t required for them to obtain this adaptation when living in the chaparral biome. I hope this helps.