* How are the [[DemBones skeletal zombies]] even able to move? For that matter, is there even any bit of a brain left for the Trioxin gas to affect? And how is it that zombies without lips (Tarman, Lady Torso Zombie) are able to to make "M," "B" and "P" sounds when they speak?
** From watching the first movie, it's inferred that the Trioxin effects the brain and the nervous system. This explains why Freddy, despite having no internal temperature, pulse or blood pressure, feels pain when his muscles move due to rigor mortis when they sit him up. The skeletal zombies still have some flesh and tendons remaining (at least in the first movie, )which implies that some nerves also remain. Since their brains were inside their skulls, which were undamaged, there was enough of it left for the skeletal zombies to reanimate. The film implies corpses have to have part of their brain remaining when exposed to the Trioxin to reanimate (for example, the split dogs still had half their brain left). The nervous system explanation also explains why corpses who've had their brains eaten don't reanimate as zombies, why each part of the body can function even when severed (albeit without direction) and why in the second film [[spoiler: electricity kills them]].
** Regarding pronouncing certain letters, it is possible to make sounds that are similar to "M", "B" and "P" without lips. It's just very difficult and one has to use their throat as well (even then it's unlikely to sound as clear as it did in the movie). The point about the nervous system above also explains how zombies with little to no lungs left can speak.
** Considering how the fridge cadaver's limbs remain animate even after it's been cut to pieces, and how the pinned butterflies - animals with brains no more complex than human ganglia - were able to animate, it seems unlikely that a brain is needed for animation at all. Suicide and Scuz probably only stayed dead because they were killed ''indoors'' and therefore never became saturated with enough trioxin to revive; for Trash and at least one of the ambushed police officers (the one seen beckoning the police cars), getting their brains eaten was no escape due to their bodies being left out in the rain.

* Exactly how is it that rotting zombie teeth can bite clean through a person's skull?
** Because it's a zombie movie. It is a zombie movie that is glorying in being a deliberately cheesy, exaggerated, trope-laden zombie movie. It's not in any way trying to be logical, realistic, or anything else, and frankly some of us are pretty grateful for that.

* So Freddy has broken out of the chapel and making his way to the embalming room. Spider and Burt decide the best course of action is to make a break for it? They were armed with fairly effective weapons and Freddy was blinded by Ernie with the nitric acid, why didn't they just go find him, bludgeon him until his head was destroyed and then toss his headless body out the embalming room door? It was the safest room in the mortuary. Or why didn't they just break his limbs so he was nothing more than an immobile stump?
** Because their overriding, overwhelming, all-consuming thought is "I want to get the hell out of here!", not "Time to kick some zombie ass!"
** Even if they did beat Freddy to the point of total immobility, then what? How does that make their overall situation any better? They're still stuck with no phone, no food, hundreds of zombies surrounding them and wanting in, and their barricades aren't going to last forever.
*** They were trying to defend themselves when they beat him. He was attacking them and the only way to stop him was with force. Their main thought was to escape, but Freddy was an immediate threat and obstacle to that plan. If they focused just on trying to escape he would've chased them. They tried to stun him and lock him in the chapel to contain him. He could also use his other senses to track them (he states he knows where Tina is because he can smell Tina), not to mention that the half-zombie in the room where Ernie and Tina were hiding could've tipped Freddy off.
*** Freddy took a full-powered blow to the back of his skull, from Spider swinging an 8-pound sledgehammer. That should've easily caved in his head but it didn't.

* Why didn't the paramedics come back as zombies? After watching Return of the Living Dead on Chiller, I noticed that at least one of the attacked cops come back but the the paramedics just stayed dead.
** I don't recall any zombie cops (though there was a confederate soldier). I think you only come back if you either inhale the trioxin while you're alive, or your body is absolutely drenched in trioxin-infused water, which would also explain why Suicide never came back, but Trash did.
*** One of the dead cops reappears waving a light to coax the second wave of cop cars in.
** Maybe they were just picked over too thoroughly? Maybe it takes longer for some people to come back?
*** You know the "they were just picked over too thoroughly" theory makes sense. After all the brain of the paramedic right next to the paramedic truck was seen being eaten by a couple of zombies in different scenes (like the send more paramedics one). Though it does make me wonder why they didn't pick the cops thoroughly now.
*** The thoroughly picked over idea helps in explaining something else in the film: How George A. Romero, in universe, came up with the idea of the destroying the brain. Maybe he was told that the whole brain had to be destroyed to keep them from coming back, but misinterpreted as that a head shot with a gun or severing the head from the body would stop them.
*** Apparently there's no obvious times table for when resurrection will occur. Maybe a few minutes, maybe a few hours. I also think that with the trioxin being diluted in the rainwater, that might explain certain discrepancies.
** Or maybe the paramedics ''did'' revive, but simply never appeared on camera as zombies. If they were mangled in a scuffle between desperate zombies before being animated, they probably wouldn't have been in any shape to be at the forefront of the pack for later attacks.
*** My guess is the paramedics did revive, but they might've taken off their raincoats so they'd be less visible when the ambushes were being set up.

* Here's a real big one: we know Tarman was in the barrel for at least a couple of decades before Frank was showing him off to Freddy. And we've seen how difficult it is to kill, let alone subdue, a zombie in this film. So, the big question is this: how the hell did the army get the zombie that would later become Tarman into the barrel in the first place? It wouldn't be an easy task to get him folded into the barrel the way he was seen at the start of the film.
** The zombies are nigh-unkillable, not nigh-unstoppable. Probably, once the nature of the threat was identified, the corpses contaminated by the original chemical spill were netted and restrained. There couldn't have been many at the time, because we only see a few barrels in the warehouse basement.
*** Those "few barrels" are a small part of the entire collection, which was spread out and delivered to locations across the country (or world, I forget). Either way, the best answer is probably that the corpses in the barrels were sealed up before reanimating, while the 'living' ones were destroyed somehow.