Question: The crew happen upon a crashed Wraith vessel from 10,000 years ago, with a hibernating Wraith inside, Problem is, why haven't other Wraith already found it sometime before then? They've been ruling the Galaxy, with a surplus of people and machines, for thousands of years - it's not like it was hidden at the bottom of the ocean like Atlantis, its distress beacon was working.
Question: The protective suits Teyla & Sheppard put on to keep them from getting infected have a "helmet" piece that does not appear to have an airtight seal; the bottom of the hood just sort of lies on top of the body suit (it's not even tucked in). Is there some way they would be protected from the airborne virus even with what appears to be a very viable opening?
Question: Why can't they use every last iota of energy they've got and dial earth and ask them to send them any ZPM's that they could find?
Answer: Because even all 4 Naquadah generators (one was destroyed) together is only enough to dial Earth for approximately 1.2 seconds (As seen in the episode "Letter from Pegasus"). Further, if Earth had found a ZPM, they would dial Atlantis and let them know. After all, the SGC has no other use for a ZPM than to dial Atlantis.
Question: It was said earlier in the show that the Atlantis crew did not have enough power to dial Earth. Earth Control had no idea of the fate of the Atlantis crew until they sent the video package telling them what was going on, then Earth Control sent reinforcements to help out. My question is; if Earth Control was able to send reinforcements to Atlantis to help out, why could they not send a crew to check on the status of Atlantis? They knew the Atlantis crew made it in the 1st episode.
Chosen answer: Because the ZPM allowing them to dial Atlantis was being used at the Antarctic defense outpost. They couldn't risk making Earth vulnerable to attack from Anubis by depleting it with repeated dialing to the Pegasus galaxy. Once they knew Atlantis was in serious danger, they had no choice.
ZPM from Antarctic was depleted in first dial, dial in Siege was done via ZPM from Egypt (SG-1: Moebius Part-1/2).
Answer: Those are actually suits that protect from hazardous chemicals. They are cheaper for the prop department and look nearly the same as biohazard suits. A real biohazard suit would indeed have a helmet that seals to the neck.
Grumpy Scot