UFO Hunters - 2008 I Underground Alien Bases 3-2 was released on:
USA: 25 March 2009
Hangar 1 The UFO Files - 2014 Underground Bases 1-2 was released on: USA: 7 March 2014
You can only make normal above ground bases, underground bases are only in diamond and pearl and platinum.
Yes
No
Yes you can. You just have to find a man in the underground who will trade one to you for the spheres, but make sure you have enough.
acids release hydrogen ions bases release hydroxide ions
acids release hydrogen ions bases release hydroxide ions
There are secret bases in Pokémon Ruby Sapphire and Emerald. In Diamond Pearl and Platinum, you have underground bases.
If you are referring to secret bases, then a WiFi connection is needed.
You have to meet other people and take their flags in the Underground.
acids are released
An alien nucleic acid is an acid composed of bases other than adenine, guanine, thymine, uracil and cytosine and/or sugars other than ribose and deoxyribose - thought to be a clue as to the possibility of extraterrestrial life.